Add bin and edit workflow

bin/gems/pdf-reader-2.14.1/lib/pdf/reader/error.rb

@@ -0,0 +1,86 @@
+# coding: utf-8
+# typed: strict
+# frozen_string_literal: true
+
+################################################################################
+#
+# Copyright (C) 2006 Peter J Jones (pjones@pmade.com)
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+class PDF::Reader
+  ################################################################################
+  # An internal PDF::Reader class that helps to verify various parts of the PDF file
+  # are valid
+  class Error # :nodoc:
+    ################################################################################
+    def self.str_assert(lvalue, rvalue, chars=nil)
+      raise MalformedPDFError, "PDF malformed, expected string but found #{lvalue.class} instead" if chars and !lvalue.kind_of?(String)
+      lvalue = lvalue[0,chars] if chars
+      raise MalformedPDFError, "PDF malformed, expected '#{rvalue}' but found '#{lvalue}' instead"  if lvalue != rvalue
+    end
+    ################################################################################
+    def self.str_assert_not(lvalue, rvalue, chars=nil)
+      raise MalformedPDFError, "PDF malformed, expected string but found #{lvalue.class} instead" if chars and !lvalue.kind_of?(String)
+      lvalue = lvalue[0,chars] if chars
+      raise MalformedPDFError, "PDF malformed, expected '#{rvalue}' but found '#{lvalue}' instead"  if lvalue == rvalue
+    end
+    ################################################################################
+    def self.assert_equal(lvalue, rvalue)
+      raise MalformedPDFError, "PDF malformed, expected '#{rvalue}' but found '#{lvalue}' instead" if lvalue != rvalue
+    end
+    ################################################################################
+    def self.validate_type(object, name, klass)
+      raise ArgumentError, "#{name} (#{object}) must be a #{klass}" unless object.is_a?(klass)
+    end
+    ################################################################################
+    def self.validate_type_as_malformed(object, name, klass)
+      raise MalformedPDFError, "#{name} (#{object}) must be a #{klass}" unless object.is_a?(klass)
+    end
+    ################################################################################
+    def self.validate_not_nil(object, name)
+      raise ArgumentError, "#{object} must not be nil" if object.nil?
+    end
+  end
+
+  ################################################################################
+  # an exception that is raised when we believe the current PDF is not following
+  # the PDF spec and cannot be recovered
+  class MalformedPDFError < RuntimeError; end
+
+  ################################################################################
+  # an exception that is raised when an invalid page number is used
+  class InvalidPageError < ArgumentError; end
+
+  ################################################################################
+  # an exception that is raised when a PDF object appears to be invalid
+  class InvalidObjectError < MalformedPDFError; end
+
+  ################################################################################
+  # an exception that is raised when a PDF follows the specs but uses a feature
+  # that we don't support just yet
+  class UnsupportedFeatureError < RuntimeError; end
+
+  ################################################################################
+  # an exception that is raised when a PDF is encrypted and we don't have the
+  # necessary data to decrypt it
+  class EncryptedPDFError < UnsupportedFeatureError; end
+end
+################################################################################