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	Add support to build a tool from source with a list of commands. This is useful when a tool can be built with multiple commands instead of a single command. Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org> Reviewed-by: Simon Glass <sjg@chromium.org>
		
			
				
	
	
		
			588 lines
		
	
	
		
			20 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
			
		
		
	
	
			588 lines
		
	
	
		
			20 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
| # SPDX-License-Identifier: GPL-2.0+
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| # Copyright 2022 Google LLC
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| # Copyright (C) 2022 Weidmüller Interface GmbH & Co. KG
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| # Stefan Herbrechtsmeier <stefan.herbrechtsmeier@weidmueller.com>
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| #
 | |
| """Base class for all bintools
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| 
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| This defines the common functionality for all bintools, including running
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| the tool, checking its version and fetching it if needed.
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| """
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| 
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| import collections
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| import glob
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| import importlib
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| import multiprocessing
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| import os
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| import shutil
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| import tempfile
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| import urllib.error
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| 
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| from u_boot_pylib import command
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| from u_boot_pylib import terminal
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| from u_boot_pylib import tools
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| from u_boot_pylib import tout
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| 
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| BINMAN_DIR = os.path.dirname(os.path.realpath(__file__))
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| 
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| # Format string for listing bintools, see also the header in list_all()
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| FORMAT = '%-16.16s %-12.12s %-26.26s %s'
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| 
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| # List of known modules, to avoid importing the module multiple times
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| modules = {}
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| 
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| # Possible ways of fetching a tool (FETCH_COUNT is number of ways)
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| FETCH_ANY, FETCH_BIN, FETCH_BUILD, FETCH_COUNT = range(4)
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| 
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| FETCH_NAMES = {
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|     FETCH_ANY: 'any method',
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|     FETCH_BIN: 'binary download',
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|     FETCH_BUILD: 'build from source'
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|     }
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| 
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| # Status of tool fetching
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| FETCHED, FAIL, PRESENT, STATUS_COUNT = range(4)
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| 
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| class Bintool:
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|     """Tool which operates on binaries to help produce entry contents
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| 
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|     This is the base class for all bintools
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|     """
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|     # List of bintools to regard as missing
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|     missing_list = []
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| 
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|     # Directory to store tools. Note that this set up by set_tool_dir() which
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|     # must be called before this class is used.
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|     tooldir = ''
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| 
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|     def __init__(self, name, desc, version_regex=None, version_args='-V'):
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|         self.name = name
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|         self.desc = desc
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|         self.version_regex = version_regex
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|         self.version_args = version_args
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| 
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|     @staticmethod
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|     def find_bintool_class(btype):
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|         """Look up the bintool class for bintool
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| 
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|         Args:
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|             byte: Bintool to use, e.g. 'mkimage'
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| 
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|         Returns:
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|             The bintool class object if found, else a tuple:
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|                 module name that could not be found
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|                 exception received
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|         """
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|         # Convert something like 'u-boot' to 'u_boot' since we are only
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|         # interested in the type.
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|         module_name = btype.replace('-', '_')
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|         module = modules.get(module_name)
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|         class_name = f'Bintool{module_name}'
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| 
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|         # Import the module if we have not already done so
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|         if not module:
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|             try:
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|                 module = importlib.import_module('binman.btool.' + module_name)
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|             except ImportError as exc:
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|                 try:
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|                     # Deal with classes which must be renamed due to conflicts
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|                     # with Python libraries
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|                     module = importlib.import_module('binman.btool.btool_' +
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|                                                      module_name)
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|                 except ImportError:
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|                     return module_name, exc
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|             modules[module_name] = module
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| 
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|         # Look up the expected class name
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|         return getattr(module, class_name)
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| 
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|     @staticmethod
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|     def create(name):
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|         """Create a new bintool object
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| 
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|         Args:
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|             name (str): Bintool to create, e.g. 'mkimage'
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| 
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|         Returns:
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|             A new object of the correct type (a subclass of Binutil)
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|         """
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|         cls = Bintool.find_bintool_class(name)
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|         if isinstance(cls, tuple):
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|             raise ValueError("Cannot import bintool module '%s': %s" % cls)
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| 
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|         # Call its constructor to get the object we want.
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|         obj = cls(name)
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|         return obj
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| 
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|     @classmethod
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|     def set_tool_dir(cls, pathname):
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|         """Set the path to use to store and find tools"""
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|         cls.tooldir = pathname
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| 
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|     def show(self):
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|         """Show a line of information about a bintool"""
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|         if self.is_present():
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|             version = self.version()
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|         else:
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|             version = '-'
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|         print(FORMAT % (self.name, version, self.desc,
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|                         self.get_path() or '(not found)'))
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| 
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|     @classmethod
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|     def set_missing_list(cls, missing_list):
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|         cls.missing_list = missing_list or []
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| 
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|     @staticmethod
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|     def get_tool_list(include_testing=False):
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|         """Get a list of the known tools
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| 
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|         Returns:
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|             list of str: names of all tools known to binman
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|         """
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|         files = glob.glob(os.path.join(BINMAN_DIR, 'btool/*'))
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|         names = [os.path.splitext(os.path.basename(fname))[0]
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|                  for fname in files]
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|         names = [name for name in names if name[0] != '_']
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|         names = [name[6:] if name.startswith('btool_') else name
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|                  for name in names]
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|         if include_testing:
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|             names.append('_testing')
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|         return sorted(names)
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| 
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|     @staticmethod
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|     def list_all():
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|         """List all the bintools known to binman"""
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|         names = Bintool.get_tool_list()
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|         print(FORMAT % ('Name', 'Version', 'Description', 'Path'))
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|         print(FORMAT % ('-' * 15,'-' * 11, '-' * 25, '-' * 30))
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|         for name in names:
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|             btool = Bintool.create(name)
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|             btool.show()
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| 
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|     def is_present(self):
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|         """Check if a bintool is available on the system
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| 
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|         Returns:
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|             bool: True if available, False if not
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|         """
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|         if self.name in self.missing_list:
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|             return False
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|         return bool(self.get_path())
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| 
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|     def get_path(self):
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|         """Get the path of a bintool
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| 
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|         Returns:
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|             str: Path to the tool, if available, else None
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|         """
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|         return tools.tool_find(self.name)
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| 
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|     def fetch_tool(self, method, col, skip_present):
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|         """Fetch a single tool
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| 
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|         Args:
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|             method (FETCH_...): Method to use
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|             col (terminal.Color): Color terminal object
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|             skip_present (boo;): Skip fetching if it is already present
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| 
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|         Returns:
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|             int: Result of fetch either FETCHED, FAIL, PRESENT
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|         """
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|         def try_fetch(meth):
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|             res = None
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|             try:
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|                 res = self.fetch(meth)
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|             except urllib.error.URLError as uerr:
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|                 message = uerr.reason
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|                 print(col.build(col.RED, f'- {message}'))
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| 
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|             except ValueError as exc:
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|                 print(f'Exception: {exc}')
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|             return res
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| 
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|         if skip_present and self.is_present():
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|             return PRESENT
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|         print(col.build(col.YELLOW, 'Fetch: %s' % self.name))
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|         if method == FETCH_ANY:
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|             for try_method in range(1, FETCH_COUNT):
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|                 print(f'- trying method: {FETCH_NAMES[try_method]}')
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|                 result = try_fetch(try_method)
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|                 if result:
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|                     break
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|         else:
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|             result = try_fetch(method)
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|         if not result:
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|             return FAIL
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|         if result is not True:
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|             fname, tmpdir = result
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|             dest = os.path.join(self.tooldir, self.name)
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|             os.makedirs(self.tooldir, exist_ok=True)
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|             print(f"- writing to '{dest}'")
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|             shutil.move(fname, dest)
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|             if tmpdir:
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|                 shutil.rmtree(tmpdir)
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|         return FETCHED
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| 
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|     @staticmethod
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|     def fetch_tools(method, names_to_fetch):
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|         """Fetch bintools from a suitable place
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| 
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|         This fetches or builds the requested bintools so that they can be used
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|         by binman
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| 
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|         Args:
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|             names_to_fetch (list of str): names of bintools to fetch
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| 
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|         Returns:
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|             True on success, False on failure
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|         """
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|         def show_status(color, prompt, names):
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|             print(col.build(
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|                 color, f'{prompt}:%s{len(names):2}: %s' %
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|                 (' ' * (16 - len(prompt)), ' '.join(names))))
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| 
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|         col = terminal.Color()
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|         skip_present = False
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|         name_list = names_to_fetch
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|         if len(names_to_fetch) == 1 and names_to_fetch[0] in ['all', 'missing']:
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|             name_list = Bintool.get_tool_list()
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|             if names_to_fetch[0] == 'missing':
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|                 skip_present = True
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|             print(col.build(col.YELLOW,
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|                             'Fetching tools:      %s' % ' '.join(name_list)))
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|         status = collections.defaultdict(list)
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|         for name in name_list:
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|             btool = Bintool.create(name)
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|             result = btool.fetch_tool(method, col, skip_present)
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|             status[result].append(name)
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|             if result == FAIL:
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|                 if method == FETCH_ANY:
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|                     print('- failed to fetch with all methods')
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|                 else:
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|                     print(f"- method '{FETCH_NAMES[method]}' is not supported")
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| 
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|         if len(name_list) > 1:
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|             if skip_present:
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|                 show_status(col.GREEN, 'Already present', status[PRESENT])
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|             show_status(col.GREEN, 'Tools fetched', status[FETCHED])
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|             if status[FAIL]:
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|                 show_status(col.RED, 'Failures', status[FAIL])
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|         return not status[FAIL]
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| 
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|     def run_cmd_result(self, *args, binary=False, raise_on_error=True):
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|         """Run the bintool using command-line arguments
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| 
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|         Args:
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|             args (list of str): Arguments to provide, in addition to the bintool
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|                 name
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|             binary (bool): True to return output as bytes instead of str
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|             raise_on_error (bool): True to raise a ValueError exception if the
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|                 tool returns a non-zero return code
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| 
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|         Returns:
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|             CommandResult: Resulting output from the bintool, or None if the
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|                 tool is not present
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|         """
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|         if self.name in self.missing_list:
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|             return None
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|         name = os.path.expanduser(self.name)  # Expand paths containing ~
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|         all_args = (name,) + args
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|         env = tools.get_env_with_path()
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|         tout.debug(f"bintool: {' '.join(all_args)}")
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|         result = command.run_pipe(
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|             [all_args], capture=True, capture_stderr=True, env=env,
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|             raise_on_error=False, binary=binary)
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| 
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|         if result.return_code:
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|             # Return None if the tool was not found. In this case there is no
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|             # output from the tool and it does not appear on the path. We still
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|             # try to run it (as above) since RunPipe() allows faking the tool's
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|             # output
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|             if not any([result.stdout, result.stderr, tools.tool_find(name)]):
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|                 tout.info(f"bintool '{name}' not found")
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|                 return None
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|             if raise_on_error:
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|                 tout.info(f"bintool '{name}' failed")
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|                 raise ValueError("Error %d running '%s': %s" %
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|                                 (result.return_code, ' '.join(all_args),
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|                                 result.stderr or result.stdout))
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|         if result.stdout:
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|             tout.debug(result.stdout)
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|         if result.stderr:
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|             tout.debug(result.stderr)
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|         return result
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| 
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|     def run_cmd(self, *args, binary=False):
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|         """Run the bintool using command-line arguments
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| 
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|         Args:
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|             args (list of str): Arguments to provide, in addition to the bintool
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|                 name
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|             binary (bool): True to return output as bytes instead of str
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| 
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|         Returns:
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|             str or bytes: Resulting stdout from the bintool
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|         """
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|         result = self.run_cmd_result(*args, binary=binary)
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|         if result:
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|             return result.stdout
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| 
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|     @classmethod
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|     def build_from_git(cls, git_repo, make_targets, bintool_path, flags=None):
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|         """Build a bintool from a git repo
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| 
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|         This clones the repo in a temporary directory, builds it with 'make',
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|         then returns the filename of the resulting executable bintool
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| 
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|         Args:
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|             git_repo (str): URL of git repo
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|             make_targets (list of str): List of targets to pass to 'make' to build
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|                 the tool
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|             bintool_path (str): Relative path of the tool in the repo, after
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|                 build is complete
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|             flags (list of str): Flags or variables to pass to make, or None
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| 
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|         Returns:
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|             tuple:
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|                 str: Filename of fetched file to copy to a suitable directory
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|                 str: Name of temp directory to remove, or None
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|             or None on error
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|         """
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|         tmpdir = tempfile.mkdtemp(prefix='binmanf.')
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|         print(f"- clone git repo '{git_repo}' to '{tmpdir}'")
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|         tools.run('git', 'clone', '--depth', '1', git_repo, tmpdir)
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|         for target in make_targets:
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|             print(f"- build target '{target}'")
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|             cmd = ['make', '-C', tmpdir, '-j', f'{multiprocessing.cpu_count()}',
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|                    target]
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|             if flags:
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|                 cmd += flags
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|             tools.run(*cmd)
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| 
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|         fname = os.path.join(tmpdir, bintool_path)
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|         if not os.path.exists(fname):
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|             print(f"- File '{fname}' was not produced")
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|             return None
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|         return fname, tmpdir
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| 
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|     @classmethod
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|     def fetch_from_url(cls, url):
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|         """Fetch a bintool from a URL
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| 
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|         Args:
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|             url (str): URL to fetch from
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| 
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|         Returns:
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|             tuple:
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|                 str: Filename of fetched file to copy to a suitable directory
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|                 str: Name of temp directory to remove, or None
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|         """
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|         fname, tmpdir = tools.download(url)
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|         tools.run('chmod', 'a+x', fname)
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|         return fname, tmpdir
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| 
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|     @classmethod
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|     def fetch_from_drive(cls, drive_id):
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|         """Fetch a bintool from Google drive
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| 
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|         Args:
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|             drive_id (str): ID of file to fetch. For a URL of the form
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|             'https://drive.google.com/file/d/xxx/view?usp=sharing' the value
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|             passed here should be 'xxx'
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| 
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|         Returns:
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|             tuple:
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|                 str: Filename of fetched file to copy to a suitable directory
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|                 str: Name of temp directory to remove, or None
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|         """
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|         url = f'https://drive.google.com/uc?export=download&id={drive_id}'
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|         return cls.fetch_from_url(url)
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| 
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|     @classmethod
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|     def apt_install(cls, package):
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|         """Install a bintool using the 'apt' tool
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| 
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|         This requires use of servo so may request a password
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| 
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|         Args:
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|             package (str): Name of package to install
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| 
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|         Returns:
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|             True, assuming it completes without error
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|         """
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|         args = ['sudo', 'apt', 'install', '-y', package]
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|         print('- %s' % ' '.join(args))
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|         tools.run(*args)
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|         return True
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| 
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|     @staticmethod
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|     def WriteDocs(modules, test_missing=None):
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|         """Write out documentation about the various bintools to stdout
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| 
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|         Args:
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|             modules: List of modules to include
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|             test_missing: Used for testing. This is a module to report
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|                 as missing
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|         """
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|         print('''.. SPDX-License-Identifier: GPL-2.0+
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| 
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| Binman bintool Documentation
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| ============================
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| 
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| This file describes the bintools (binary tools) supported by binman. Bintools
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| are binman's name for external executables that it runs to generate or process
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| binaries. It is fairly easy to create new bintools. Just add a new file to the
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| 'btool' directory. You can use existing bintools as examples.
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| 
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| 
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| ''')
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|         modules = sorted(modules)
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|         missing = []
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|         for name in modules:
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|             module = Bintool.find_bintool_class(name)
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|             docs = getattr(module, '__doc__')
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|             if test_missing == name:
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|                 docs = None
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|             if docs:
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|                 lines = docs.splitlines()
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|                 first_line = lines[0]
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|                 rest = [line[4:] for line in lines[1:]]
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|                 hdr = 'Bintool: %s: %s' % (name, first_line)
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|                 print(hdr)
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|                 print('-' * len(hdr))
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|                 print('\n'.join(rest))
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|                 print()
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|                 print()
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|             else:
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|                 missing.append(name)
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| 
 | |
|         if missing:
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|             raise ValueError('Documentation is missing for modules: %s' %
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|                              ', '.join(missing))
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| 
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|     # pylint: disable=W0613
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|     def fetch(self, method):
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|         """Fetch handler for a bintool
 | |
| 
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|         This should be implemented by the base class
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| 
 | |
|         Args:
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|             method (FETCH_...): Method to use
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| 
 | |
|         Returns:
 | |
|             tuple:
 | |
|                 str: Filename of fetched file to copy to a suitable directory
 | |
|                 str: Name of temp directory to remove, or None
 | |
|             or True if the file was fetched and already installed
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|             or None if no fetch() implementation is available
 | |
| 
 | |
|         Raises:
 | |
|             Valuerror: Fetching could not be completed
 | |
|         """
 | |
|         print(f"No method to fetch bintool '{self.name}'")
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|         return False
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| 
 | |
|     def version(self):
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|         """Version handler for a bintool
 | |
| 
 | |
|         Returns:
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|             str: Version string for this bintool
 | |
|         """
 | |
|         if self.version_regex is None:
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|             return 'unknown'
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| 
 | |
|         import re
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| 
 | |
|         result = self.run_cmd_result(self.version_args)
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|         out = result.stdout.strip()
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|         if not out:
 | |
|             out = result.stderr.strip()
 | |
|         if not out:
 | |
|             return 'unknown'
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| 
 | |
|         m_version = re.search(self.version_regex, out)
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|         return m_version.group(1) if m_version else out
 | |
| 
 | |
| 
 | |
| class BintoolPacker(Bintool):
 | |
|     """Tool which compression / decompression entry contents
 | |
| 
 | |
|     This is a bintools base class for compression / decompression packer
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| 
 | |
|     Properties:
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|         name: Name of packer tool
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|         compression: Compression type (COMPRESS_...), value of 'name' property
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|             if none
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|         compress_args: List of positional args provided to tool for compress,
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|             ['--compress'] if none
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|         decompress_args: List of positional args provided to tool for
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|             decompress, ['--decompress'] if none
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|         fetch_package: Name of the tool installed using the apt, value of 'name'
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|             property if none
 | |
|         version_regex: Regular expressions to extract the version from tool
 | |
|             version output,  '(v[0-9.]+)' if none
 | |
|     """
 | |
|     def __init__(self, name, compression=None, compress_args=None,
 | |
|                  decompress_args=None, fetch_package=None,
 | |
|                  version_regex=r'(v[0-9.]+)', version_args='-V'):
 | |
|         desc = '%s compression' % (compression if compression else name)
 | |
|         super().__init__(name, desc, version_regex, version_args)
 | |
|         if compress_args is None:
 | |
|             compress_args = ['--compress']
 | |
|         self.compress_args = compress_args
 | |
|         if decompress_args is None:
 | |
|             decompress_args = ['--decompress']
 | |
|         self.decompress_args = decompress_args
 | |
|         if fetch_package is None:
 | |
|             fetch_package = name
 | |
|         self.fetch_package = fetch_package
 | |
| 
 | |
|     def compress(self, indata):
 | |
|         """Compress data
 | |
| 
 | |
|         Args:
 | |
|             indata (bytes): Data to compress
 | |
| 
 | |
|         Returns:
 | |
|             bytes: Compressed data
 | |
|         """
 | |
|         with tempfile.NamedTemporaryFile(prefix='comp.tmp',
 | |
|                                          dir=tools.get_output_dir()) as tmp:
 | |
|             tools.write_file(tmp.name, indata)
 | |
|             args = self.compress_args + ['--stdout', tmp.name]
 | |
|             return self.run_cmd(*args, binary=True)
 | |
| 
 | |
|     def decompress(self, indata):
 | |
|         """Decompress data
 | |
| 
 | |
|         Args:
 | |
|             indata (bytes): Data to decompress
 | |
| 
 | |
|         Returns:
 | |
|             bytes: Decompressed data
 | |
|         """
 | |
|         with tempfile.NamedTemporaryFile(prefix='decomp.tmp',
 | |
|                                          dir=tools.get_output_dir()) as inf:
 | |
|             tools.write_file(inf.name, indata)
 | |
|             args = self.decompress_args + ['--stdout', inf.name]
 | |
|             return self.run_cmd(*args, binary=True)
 | |
| 
 | |
|     def fetch(self, method):
 | |
|         """Fetch handler
 | |
| 
 | |
|         This installs the gzip package using the apt utility.
 | |
| 
 | |
|         Args:
 | |
|             method (FETCH_...): Method to use
 | |
| 
 | |
|         Returns:
 | |
|             True if the file was fetched and now installed, None if a method
 | |
|             other than FETCH_BIN was requested
 | |
| 
 | |
|         Raises:
 | |
|             Valuerror: Fetching could not be completed
 | |
|         """
 | |
|         if method != FETCH_BIN:
 | |
|             return None
 | |
|         return self.apt_install(self.fetch_package)
 |