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namespace System.Web.Services.Protocols {
using System;
using System.Reflection;
using System.Collections;
using System.Text.RegularExpressions;
using System.Security.Permissions;
/// <include file='doc\PatternMatcher.uex' path='docs/doc[@for="PatternMatcher"]/*' />
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
[PermissionSet(SecurityAction.LinkDemand, Name = "FullTrust")]
public sealed class PatternMatcher {
MatchType matchType;
/// <include file='doc\PatternMatcher.uex' path='docs/doc[@for="PatternMatcher.PatternMatcher"]/*' />
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
public PatternMatcher(Type type) {
matchType = MatchType.Reflect(type);
}
/// <include file='doc\PatternMatcher.uex' path='docs/doc[@for="PatternMatcher.Match"]/*' />
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
public object Match(string text) {
return matchType.Match(text);
}
}
internal class MatchType {
Type type;
MatchMember[] fields;
internal Type Type {
get { return type; }
}
internal static MatchType Reflect(Type type) {
MatchType matchType = new MatchType();
matchType.type = type;
MemberInfo[] memberInfos = type.GetMembers(BindingFlags.DeclaredOnly | BindingFlags.Public | BindingFlags.Instance);
ArrayList list = new ArrayList();
for (int i = 0; i < memberInfos.Length; i++) {
MatchMember member = MatchMember.Reflect(memberInfos[i]);
if (member != null) list.Add(member);
}
matchType.fields = (MatchMember[])list.ToArray(typeof(MatchMember));
return matchType;
}
internal object Match(string text) {
object target = Activator.CreateInstance(type);
for (int i = 0; i < fields.Length; i++)
fields[i].Match(target, text);
return target;
}
}
internal class MatchMember {
MemberInfo memberInfo;
Regex regex;
int group;
int capture;
int maxRepeats;
MatchType matchType;
internal void Match(object target, string text) {
if (memberInfo is FieldInfo)
((FieldInfo)memberInfo).SetValue(target, matchType == null ? MatchString(text) : MatchClass(text));
else if (memberInfo is PropertyInfo) {
((PropertyInfo)memberInfo).SetValue(target, matchType == null ? MatchString(text) : MatchClass(text), new object[0]);
}
}
object MatchString(string text) {
Match m = regex.Match(text);
Type fieldType = memberInfo is FieldInfo ? ((FieldInfo)memberInfo).FieldType : ((PropertyInfo)memberInfo).PropertyType;
if (fieldType.IsArray) {
ArrayList matches = new ArrayList();
int matchCount = 0;
while (m.Success && matchCount < maxRepeats) {
if (m.Groups.Count <= group)
throw BadGroupIndexException(group, memberInfo.Name, m.Groups.Count - 1);
Group g = m.Groups[group];
foreach (Capture c in g.Captures) {
matches.Add(text.Substring(c.Index, c.Length));
}
m = m.NextMatch();
matchCount++;
}
return matches.ToArray(typeof(string));
}
else {
if (m.Success) {
if (m.Groups.Count <= group)
throw BadGroupIndexException(group, memberInfo.Name, m.Groups.Count - 1);
Group g = m.Groups[group];
if (g.Captures.Count > 0) {
if (g.Captures.Count <= capture)
throw BadCaptureIndexException(capture, memberInfo.Name, g.Captures.Count - 1);
Capture c = g.Captures[capture];
return text.Substring(c.Index, c.Length);
}
}
return null;
}
}
object MatchClass(string text) {
Match m = regex.Match(text);
Type fieldType = memberInfo is FieldInfo ? ((FieldInfo)memberInfo).FieldType : ((PropertyInfo)memberInfo).PropertyType;
if (fieldType.IsArray) {
ArrayList matches = new ArrayList();
int matchCount = 0;
while (m.Success && matchCount < maxRepeats) {
if (m.Groups.Count <= group)
throw BadGroupIndexException(group, memberInfo.Name, m.Groups.Count - 1);
Group g = m.Groups[group];
foreach (Capture c in g.Captures) {
matches.Add(matchType.Match(text.Substring(c.Index, c.Length)));
}
m = m.NextMatch();
matchCount++;
}
return matches.ToArray(matchType.Type);
}
else {
if (m.Success) {
if (m.Groups.Count <= group)
throw BadGroupIndexException(group, memberInfo.Name, m.Groups.Count - 1);
Group g = m.Groups[group];
if (g.Captures.Count > 0) {
if (g.Captures.Count <= capture)
throw BadCaptureIndexException(capture, memberInfo.Name, g.Captures.Count - 1);
Capture c = g.Captures[capture];
return matchType.Match(text.Substring(c.Index, c.Length));
}
}
return null;
}
}
static Exception BadCaptureIndexException(int index, string matchName, int highestIndex) {
return new Exception(Res.GetString(Res.WebTextMatchBadCaptureIndex, index, matchName, highestIndex));
}
static Exception BadGroupIndexException(int index, string matchName, int highestIndex) {
return new Exception(Res.GetString(Res.WebTextMatchBadGroupIndex, index, matchName, highestIndex));
}
internal static MatchMember Reflect(MemberInfo memberInfo) {
Type memberType = null;
if (memberInfo is PropertyInfo) {
PropertyInfo propertyInfo = (PropertyInfo)memberInfo;
if (!propertyInfo.CanRead)
return null;
//
if (!propertyInfo.CanWrite)
return null;
MethodInfo getMethod = propertyInfo.GetGetMethod();
if (getMethod.IsStatic)
return null;
ParameterInfo[] parameters = getMethod.GetParameters();
if (parameters.Length > 0)
return null;
memberType = propertyInfo.PropertyType;
}
if (memberInfo is FieldInfo) {
FieldInfo fieldInfo = (FieldInfo)memberInfo;
if (!fieldInfo.IsPublic)
return null;
if (fieldInfo.IsStatic)
return null;
if (fieldInfo.IsSpecialName)
return null;
memberType = fieldInfo.FieldType;
}
object[] attrs = memberInfo.GetCustomAttributes(typeof(MatchAttribute), false);
if (attrs.Length == 0) return null;
MatchAttribute attr = (MatchAttribute)attrs[0];
MatchMember member = new MatchMember();
member.regex = new Regex(attr.Pattern, RegexOptions.Singleline | (attr.IgnoreCase ? RegexOptions.IgnoreCase | RegexOptions.CultureInvariant : 0));
member.group = attr.Group;
member.capture = attr.Capture;
member.maxRepeats = attr.MaxRepeats;
member.memberInfo = memberInfo;
if (member.maxRepeats < 0) // unspecified
member.maxRepeats = memberType.IsArray ? int.MaxValue : 1;
if (memberType.IsArray) {
memberType = memberType.GetElementType();
}
if (memberType != typeof(string)) {
member.matchType = MatchType.Reflect(memberType);
}
return member;
}
}
}
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