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Lib/site-packages/pipenv/vendor/requirementslib/exceptions.py

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+# -*- coding: utf-8 -*-
+from __future__ import absolute_import, print_function
+
+import errno
+import os
+import sys
+
+import six
+from vistir.compat import FileNotFoundError
+
+if six.PY2:
+
+    class FileExistsError(OSError):
+        def __init__(self, *args, **kwargs):
+            self.errno = errno.EEXIST
+            super(FileExistsError, self).__init__(*args, **kwargs)
+
+
+else:
+    from six.moves.builtins import FileExistsError
+
+
+class RequirementError(Exception):
+    pass
+
+
+class MissingParameter(Exception):
+    def __init__(self, param):
+        self.message = self.get_message(param)
+        super(MissingParameter, self).__init__(self.message)
+
+    @classmethod
+    def get_message(cls, param):
+        return "Missing Parameter: %s" % param
+
+    def show(self, param):
+        print(self.message, file=sys.stderr, flush=True)
+
+
+class FileCorruptException(OSError):
+    def __init__(self, path, *args, **kwargs):
+        path = path
+        backup_path = kwargs.pop("backup_path", None)
+        if not backup_path and args:
+            args = reversed(args)
+            backup_path = args.pop()
+            if not isinstance(backup_path, six.string_types) or not os.path.exists(
+                os.path.abspath(os.path.dirname(backup_path))
+            ):
+                args.append(backup_path)
+                backup_path = None
+            if args:
+                args = reversed(args)
+        self.message = self.get_message(path, backup_path=backup_path)
+        super(FileCorruptException, self).__init__(self.message)
+
+    def get_message(self, path, backup_path=None):
+        message = "ERROR: Failed to load file at %s" % path
+        if backup_path:
+            msg = "it will be backed up to %s and removed" % backup_path
+        else:
+            msg = "it will be removed and replaced on the next lock."
+        message = "{0}\nYour lockfile is corrupt, {1}".format(message, msg)
+        return message
+
+    def show(self):
+        print(self.message, file=sys.stderr, flush=True)
+
+
+class LockfileCorruptException(FileCorruptException):
+    def __init__(self, path, backup_path=None):
+        self.message = self.get_message(path, backup_path=backup_path)
+        super(LockfileCorruptException, self).__init__(self.message)
+
+    def get_message(self, path, backup_path=None):
+        message = "ERROR: Failed to load lockfile at %s" % path
+        if backup_path:
+            msg = "it will be backed up to %s and removed" % backup_path
+        else:
+            msg = "it will be removed and replaced on the next lock."
+        message = "{0}\nYour lockfile is corrupt, {1}".format(message, msg)
+        return message
+
+    def show(self, path, backup_path=None):
+        print(self.message, file=sys.stderr, flush=True)
+
+
+class PipfileCorruptException(FileCorruptException):
+    def __init__(self, path, backup_path=None):
+        self.message = self.get_message(path, backup_path=backup_path)
+        super(PipfileCorruptException, self).__init__(self.message)
+
+    def get_message(self, path, backup_path=None):
+        message = "ERROR: Failed to load Pipfile at %s" % path
+        if backup_path:
+            msg = "it will be backed up to %s and removed" % backup_path
+        else:
+            msg = "it will be removed and replaced on the next lock."
+        message = "{0}\nYour Pipfile is corrupt, {1}".format(message, msg)
+        return message
+
+    def show(self, path, backup_path=None):
+        print(self.message, file=sys.stderr, flush=True)
+
+
+class PipfileNotFound(FileNotFoundError):
+    def __init__(self, path, *args, **kwargs):
+        self.errno = errno.ENOENT
+        self.filename = path
+        super(PipfileNotFound, self).__init__(self.filename)