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118 lines
3.3 KiB
118 lines
3.3 KiB
#
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# This file is part of pysmi software.
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#
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# Copyright (c) 2015-2019, Ilya Etingof <etingof@gmail.com>
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# License: http://snmplabs.com/pysmi/license.html
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#
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import os
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import sys
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import tempfile
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import py_compile
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try:
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import importlib
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try:
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SOURCE_SUFFIXES = importlib.machinery.SOURCE_SUFFIXES
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except Exception:
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raise ImportError()
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except ImportError:
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import imp
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SOURCE_SUFFIXES = [s[0] for s in imp.get_suffixes()
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if s[2] == imp.PY_SOURCE]
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from pysmi.writer.base import AbstractWriter
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from pysmi.compat import encode, decode
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from pysmi import debug
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from pysmi import error
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class PyFileWriter(AbstractWriter):
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"""Stores transformed MIB modules as Python files at specified location.
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User is expected to pass *PyFileWriter* class instance to
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*MibCompiler* on instantiation. The rest is internal to *MibCompiler*.
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"""
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pyCompile = True
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pyOptimizationLevel = -1
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def __init__(self, path):
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"""Creates an instance of *PyFileWriter* class.
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Args:
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path: writable directory to store Python modules
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"""
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self._path = decode(os.path.normpath(path))
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def __str__(self):
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return '%s{"%s"}' % (self.__class__.__name__, self._path)
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def putData(self, mibname, data, comments=(), dryRun=False):
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if dryRun:
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debug.logger & debug.flagWriter and debug.logger('dry run mode')
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return
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if not os.path.exists(self._path):
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try:
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os.makedirs(self._path)
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except OSError:
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raise error.PySmiWriterError(
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'failure creating destination directory %s: %s' % (self._path, sys.exc_info()[1]), writer=self)
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if comments:
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data = '#\n' + ''.join(['# %s\n' % x for x in comments]) + '#\n' + data
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pyfile = os.path.join(self._path, decode(mibname))
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pyfile += SOURCE_SUFFIXES[0]
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tfile = None
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try:
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fd, tfile = tempfile.mkstemp(dir=self._path)
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os.write(fd, encode(data))
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os.close(fd)
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os.rename(tfile, pyfile)
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except (OSError, IOError, UnicodeEncodeError):
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exc = sys.exc_info()
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if tfile:
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try:
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os.unlink(tfile)
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except OSError:
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pass
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raise error.PySmiWriterError('failure writing file %s: %s' % (pyfile, exc[1]), file=pyfile, writer=self)
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debug.logger & debug.flagWriter and debug.logger('created file %s' % pyfile)
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if self.pyCompile:
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try:
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if sys.version_info[0:2] > (3, 1):
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# noinspection PyArgumentList
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py_compile.compile(pyfile, doraise=True, optimize=self.pyOptimizationLevel)
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else:
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py_compile.compile(pyfile, doraise=True)
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except (SyntaxError, py_compile.PyCompileError):
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pass # XXX
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except:
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try:
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os.unlink(pyfile)
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except Exception:
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pass
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raise error.PySmiWriterError('failure compiling %s: %s' % (pyfile, sys.exc_info()[1]), file=mibname, writer=self)
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debug.logger & debug.flagWriter and debug.logger('%s stored' % mibname)
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def getData(self, filename):
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return ''
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