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using System;
using System.Diagnostics;
using System.Diagnostics.Contracts;
using System.Globalization;
using System.Text;
namespace System.Runtime.Versioning {
#if !SILVERLIGHT
[Serializable]
#endif
public sealed class FrameworkName : IEquatable<FrameworkName> {
// ---- SECTION: members supporting exposed properties -------------*
#region members supporting exposed properties
readonly String m_identifier = null;
readonly Version m_version = null;
readonly String m_profile = null;
String m_fullName = null;
const Char c_componentSeparator = ',';
const Char c_keyValueSeparator = '=';
const Char c_versionValuePrefix = 'v';
const String c_versionKey = "Version";
const String c_profileKey = "Profile";
#endregion members supporting exposed properties
// ---- SECTION: public properties --------------*
#region public properties
public String Identifier {
get {
Contract.Assert(m_identifier != null);
return m_identifier;
}
}
public Version Version {
get {
Contract.Assert(m_version != null);
return m_version;
}
}
public String Profile {
get {
Contract.Assert(m_profile != null);
return m_profile;
}
}
public String FullName {
get {
if (m_fullName == null) {
StringBuilder sb = new StringBuilder();
sb.Append(Identifier);
sb.Append(c_componentSeparator);
sb.Append(c_versionKey).Append(c_keyValueSeparator);
sb.Append(c_versionValuePrefix);
sb.Append(Version);
if (!String.IsNullOrEmpty(Profile)) {
sb.Append(c_componentSeparator);
sb.Append(c_profileKey).Append(c_keyValueSeparator);
sb.Append(Profile);
}
m_fullName = sb.ToString();
}
Contract.Assert(m_fullName != null);
return m_fullName;
}
}
#endregion public properties
// ---- SECTION: public instance methods --------------*
#region public instance methods
public override Boolean Equals(Object obj) {
return Equals(obj as FrameworkName);
}
public Boolean Equals(FrameworkName other) {
if (Object.ReferenceEquals(other, null)) {
return false;
}
return Identifier == other.Identifier &&
Version == other.Version &&
Profile == other.Profile;
}
public override Int32 GetHashCode() {
return Identifier.GetHashCode() ^ Version.GetHashCode() ^ Profile.GetHashCode();
}
public override String ToString() {
return FullName;
}
#endregion public instance methods
// -------- SECTION: constructors -----------------*
#region constructors
public FrameworkName(String identifier, Version version)
: this(identifier, version, null) {}
public FrameworkName(String identifier, Version version, String profile) {
if (identifier == null) {
throw new ArgumentNullException("identifier");
}
if (identifier.Trim().Length == 0) {
throw new ArgumentException(SR.GetString(SR.net_emptystringcall, "identifier"), "identifier");
}
if (version == null) {
throw new ArgumentNullException("version");
}
Contract.EndContractBlock();
m_identifier = identifier.Trim();
m_version = (Version)version.Clone();
m_profile = (profile == null) ? String.Empty : profile.Trim();
}
// Parses strings in the following format: "<identifier>, Version=[v|V]<version>, Profile=<profile>"
// - The identifier and version is required, profile is optional
// - Only three components are allowed.
// - The version string must be in the System.Version format; an optional "v" or "V" prefix is allowed
public FrameworkName(String frameworkName) {
if (frameworkName == null) {
throw new ArgumentNullException("frameworkName");
}
if (frameworkName.Length == 0) {
throw new ArgumentException(SR.GetString(SR.net_emptystringcall, "frameworkName"), "frameworkName");
}
Contract.EndContractBlock();
string[] components = frameworkName.Split(c_componentSeparator);
// Identifer and Version are required, Profile is optional.
if (components.Length < 2 || components.Length > 3) {
throw new ArgumentException(SR.GetString(SR.Argument_FrameworkNameTooShort), "frameworkName");
}
//
// 1) Parse the "Identifier", which must come first. Trim any whitespace
//
m_identifier = components[0].Trim();
if (m_identifier.Length == 0) {
throw new ArgumentException(SR.GetString(SR.Argument_FrameworkNameInvalid), "frameworkName");
}
bool versionFound = false;
m_profile = String.Empty;
//
// The required "Version" and optional "Profile" component can be in any order
//
for (int i = 1; i < components.Length; i++) {
// Get the key/value pair separated by '='
string[] keyValuePair = components[i].Split(c_keyValueSeparator);
if (keyValuePair.Length != 2) {
throw new ArgumentException(SR.GetString(SR.Argument_FrameworkNameInvalid), "frameworkName");
}
// Get the key and value, trimming any whitespace
string key = keyValuePair[0].Trim();
string value = keyValuePair[1].Trim();
//
// 2) Parse the required "Version" key value
//
if (key.Equals(c_versionKey, StringComparison.OrdinalIgnoreCase)) {
versionFound = true;
// Allow the version to include a 'v' or 'V' prefix...
if (value.Length > 0 && (value[0] == c_versionValuePrefix || value[0] == 'V')) {
value = value.Substring(1);
}
try {
m_version = new Version(value);
}
catch (Exception e) {
throw new ArgumentException(SR.GetString(SR.Argument_FrameworkNameInvalidVersion), "frameworkName", e);
}
}
//
// 3) Parse the optional "Profile" key value
//
else if (key.Equals(c_profileKey, StringComparison.OrdinalIgnoreCase)) {
if (!String.IsNullOrEmpty(value)) {
m_profile = value;
}
}
else {
throw new ArgumentException(SR.GetString(SR.Argument_FrameworkNameInvalid), "frameworkName");
}
}
if (!versionFound) {
throw new ArgumentException(SR.GetString(SR.Argument_FrameworkNameMissingVersion), "frameworkName");
}
}
#endregion constructors
// -------- SECTION: public static methods -----------------*
#region public static methods
public static Boolean operator ==(FrameworkName left, FrameworkName right) {
if (Object.ReferenceEquals(left, null)) {
return Object.ReferenceEquals(right, null);
}
return left.Equals(right);
}
public static Boolean operator !=(FrameworkName left, FrameworkName right) {
return !(left == right);
}
#endregion public static methods
}
}
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