Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Web/Util/ProviderUtil.cs

@@ -0,0 +1,200 @@
+//------------------------------------------------------------------------------
+// <copyright file="Sec.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>                                                                
+//------------------------------------------------------------------------------
+
+/*
+ * Sec
+ * 
+ * Copyright (c) 1998-1999, Microsoft Corporation
+ * 
+ */
+
+namespace System.Web.Util {
+    using System.Collections.Specialized;
+    using System.Web.Mail;
+    using System.Configuration;
+    using System.Globalization;
+
+    internal static class ProviderUtil {
+        internal const int  Infinite = Int32.MaxValue;
+
+        internal static void GetAndRemoveStringAttribute(NameValueCollection config, string attrib, string providerName, ref string val) {
+            val = config.Get(attrib);
+            config.Remove(attrib);
+        }
+        
+        internal static void GetAndRemovePositiveAttribute(NameValueCollection config, string attrib, string providerName, ref int val) {
+            GetPositiveAttribute(config, attrib, providerName, ref val);
+            config.Remove(attrib);
+        }
+            
+        internal static void GetPositiveAttribute(NameValueCollection config, string attrib, string providerName, ref int val) {
+            string s = config.Get(attrib);
+            int t;
+
+            if (s == null) {
+                return;
+            }
+
+            try {
+                t = Convert.ToInt32(s, CultureInfo.InvariantCulture);
+            }
+            catch (Exception e){
+                if (e is ArgumentException || e is FormatException || e is OverflowException) {
+                    throw new ConfigurationErrorsException(
+                        SR.GetString(SR.Invalid_provider_positive_attributes, attrib, providerName));
+                }
+                else {
+                    throw;
+                }
+                
+            }
+            
+            if (t < 0) {
+                throw new ConfigurationErrorsException(
+                    SR.GetString(SR.Invalid_provider_positive_attributes, attrib, providerName));
+
+            }
+
+            val = t;
+        }
+
+        internal static void GetAndRemovePositiveOrInfiniteAttribute(NameValueCollection config, string attrib, string providerName, ref int val) {
+            GetPositiveOrInfiniteAttribute(config, attrib, providerName, ref val);
+            config.Remove(attrib);
+        }
+            
+        internal static void GetPositiveOrInfiniteAttribute(NameValueCollection config, string attrib, string providerName, ref int val) {
+            string s = config.Get(attrib);
+            int t;
+
+            if (s == null) {
+                return;
+            }
+
+            if (s == "Infinite") {
+                t = ProviderUtil.Infinite;
+            }
+            else {
+                try {
+                    t = Convert.ToInt32(s, CultureInfo.InvariantCulture);
+                }
+                catch (Exception e){
+                    if (e is ArgumentException || e is FormatException || e is OverflowException) {
+                        throw new ConfigurationErrorsException(
+                            SR.GetString(SR.Invalid_provider_positive_attributes, attrib, providerName));
+                    }
+                    else {
+                        throw;
+                    }
+                    
+                }
+                
+                if (t < 0) {
+                    throw new ConfigurationErrorsException(
+                        SR.GetString(SR.Invalid_provider_positive_attributes, attrib, providerName));
+
+                }
+            }
+
+            val = t;
+        }
+
+        internal static void GetAndRemoveNonZeroPositiveOrInfiniteAttribute(NameValueCollection config, string attrib, string providerName, ref int val) {
+            GetNonZeroPositiveOrInfiniteAttribute(config, attrib, providerName, ref val);
+            config.Remove(attrib);
+        }
+
+        internal static void GetNonZeroPositiveOrInfiniteAttribute(NameValueCollection config, string attrib, string providerName, ref int val) {
+            string s = config.Get(attrib);
+            int t;
+
+            if (s == null) {
+                return;
+            }
+
+            if (s == "Infinite") {
+                t = ProviderUtil.Infinite;
+            }
+            else {
+                try {
+                    t = Convert.ToInt32(s, CultureInfo.InvariantCulture);
+                }
+                catch (Exception e){
+                    if (e is ArgumentException || e is FormatException || e is OverflowException) {
+                        throw new ConfigurationErrorsException(
+                            SR.GetString(SR.Invalid_provider_non_zero_positive_attributes, attrib, providerName));
+                    }
+                    else {
+                        throw;
+                    }
+                    
+                }
+                
+                if (t <= 0) {
+                    throw new ConfigurationErrorsException(
+                        SR.GetString(SR.Invalid_provider_non_zero_positive_attributes, attrib, providerName));
+
+                }
+            }
+
+            val = t;
+        }
+
+        internal static void GetAndRemoveBooleanAttribute(NameValueCollection config, string attrib, string providerName, ref bool val) {
+            GetBooleanAttribute(config, attrib, providerName, ref val);
+            config.Remove(attrib);
+        }
+        
+        internal static void GetBooleanAttribute(NameValueCollection config, string attrib, string providerName, ref bool val) {
+            string s = config.Get(attrib);
+            if (s == null) {
+                return;
+            }
+            
+            if (s == "true") {
+                val = true;
+            }
+            else if (s == "false") {
+                val = false;
+            }
+            else {
+                throw new ConfigurationErrorsException(SR.GetString(SR.Invalid_provider_attribute, attrib, providerName, s));
+            }
+        }
+
+        internal static void GetAndRemoveRequiredNonEmptyStringAttribute(NameValueCollection config, string attrib, string providerName, ref string val) {
+            GetRequiredNonEmptyStringAttribute(config, attrib, providerName, ref val);
+            config.Remove(attrib);            
+        }
+        
+        internal static void GetRequiredNonEmptyStringAttribute(NameValueCollection config, string attrib, string providerName, ref string val) {
+            GetNonEmptyStringAttributeInternal(config, attrib, providerName, ref val, true);
+        }
+        
+        private static void GetNonEmptyStringAttributeInternal(NameValueCollection config, string attrib, string providerName, ref string val, bool required) {
+            string s = config.Get(attrib);
+
+            // If it's (null and required) -OR- (empty string) we throw
+            if ((s == null && required) || (s.Length == 0)) {
+                throw new ConfigurationErrorsException(
+                    SR.GetString(SR.Provider_missing_attribute, attrib, providerName));
+            }
+
+            val = s;
+        }
+
+        internal static void CheckUnrecognizedAttributes(NameValueCollection config, string providerName) {
+            if (config.Count > 0)
+            {
+                string attribUnrecognized = config.GetKey(0);
+                if (!String.IsNullOrEmpty(attribUnrecognized))
+                    throw new ConfigurationErrorsException(
+                                    SR.GetString(SR.Unexpected_provider_attribute, attribUnrecognized, providerName));
+            }
+        }
+    }
+
+}