internal static bool SchemeContains (UriSchemes keys, UriSchemes flag)
{
return (keys & flag) != 0;
}
private static bool NeedToUnescape (char c, UriSchemes scheme, UriComponents component, UriKind uriKind,
UriFormat uriFormat, FormatFlags formatFlags)
{
if ((formatFlags & FormatFlags.IPv6Host) != 0)
return false;
if (uriFormat == UriFormat.Unescaped)
return true;
UriSchemes sDecoders = UriSchemes.NetPipe | UriSchemes.NetTcp;
if (!IriParsing)
sDecoders |= UriSchemes.Http | UriSchemes.Https;
if (c == '/' || c == '\\') {
if (!IriParsing && uriKind == UriKind.Absolute && uriFormat != UriFormat.UriEscaped &&
uriFormat != UriFormat.SafeUnescaped)
return true;
if (SchemeContains (scheme, UriSchemes.File)) {
return component != UriComponents.Fragment &&
(component != UriComponents.Query || !IriParsing);
}
return component != UriComponents.Query && component != UriComponents.Fragment &&
SchemeContains (scheme, sDecoders);
}
if (c == '?') {
//Avoid creating new query
if (SupportsQuery (scheme) && component == UriComponents.Path)
return false;
if (!IriParsing && uriFormat == ToStringUnescape) {
if (SupportsQuery (scheme))
return component == UriComponents.Query || component == UriComponents.Fragment;
return component == UriComponents.Fragment;
}
return false;
}
if (c == '#')
return false;
if (uriFormat == ToStringUnescape && !IriParsing) {
if (uriKind == UriKind.Relative)
return false;
switch (c) {
case '$':
case '&':
case '+':
case ',':
case ';':
case '=':
case '@':
return true;
}
if (c < 0x20 || c == 0x7f)
return true;
}
if (uriFormat == UriFormat.SafeUnescaped || uriFormat == ToStringUnescape) {
switch (c) {
case '-':
case '.':
case '_':
case '~':
return true;
case ' ':
case '!':
case '"':
case '\'':
case '(':
case ')':
case '*':
case '<':
case '>':
case '^':
case '`':
case '{':
case '}':
case '|':
return uriKind != UriKind.Relative ||
(IriParsing && (formatFlags & FormatFlags.HasUriCharactersToNormalize) != 0);
case ':':
case '[':
case ']':
return uriKind != UriKind.Relative;
}
if ((c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z') || (c >= '0' && c <= '9'))
return true;
if (c > 0x7f)
return true;
return false;
}
if (uriFormat == UriFormat.UriEscaped) {
if (!IriParsing) {
if (c == '.') {
if (SchemeContains (scheme, UriSchemes.File))
return component != UriComponents.Fragment;
return component != UriComponents.Query && component != UriComponents.Fragment &&
SchemeContains (scheme, sDecoders);
}
return false;
}
switch (c) {
case '-':
case '.':
case '_':
case '~':
return true;
}
if ((formatFlags & FormatFlags.HasUriCharactersToNormalize) != 0) {
switch (c) {
case '!':
case '\'':
case '(':
case ')':
case '*':
case ':':
case '[':
case ']':
return true;
}
}
if ((c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z') || (c >= '0' && c <= '9'))
return true;
return false;
}
return false;
}
private static bool NeedToEscape (char c, UriSchemes scheme, UriComponents component, UriKind uriKind,
UriFormat uriFormat, FormatFlags formatFlags)
{
if ((formatFlags & FormatFlags.IPv6Host) != 0)
return false;
if (c == '?') {
if (uriFormat == UriFormat.Unescaped)
return false;
if (!SupportsQuery (scheme))
return component != UriComponents.Fragment;
return false;
}
if (c == '#') {
//Avoid removing fragment
if (component == UriComponents.Path || component == UriComponents.Query)
return false;
if (component == UriComponents.Fragment &&
(uriFormat == ToStringUnescape || uriFormat == UriFormat.SafeUnescaped) &&
(formatFlags & FormatFlags.HasFragmentPercentage) != 0)
return true;
return false;
}
if (uriFormat == UriFormat.SafeUnescaped || uriFormat == ToStringUnescape) {
if (c == '%')
return uriKind != UriKind.Relative;
}
if (uriFormat == UriFormat.SafeUnescaped) {
if (c < 0x20 || c == 0x7F)
return true;
}
if (uriFormat == UriFormat.UriEscaped) {
if (c < 0x20 || c >= 0x7F)
return component != UriComponents.Host;
switch (c) {
case ' ':
case '"':
case '%':
case '<':
case '>':
case '^':
case '`':
case '{':
case '}':
case '|':
return true;
case '[':
case ']':
return !IriParsing;
case '\\':
return component != UriComponents.Path ||
SchemeContains (scheme,
UriSchemes.Gopher | UriSchemes.Ldap | UriSchemes.Mailto | UriSchemes.Nntp |
UriSchemes.Telnet | UriSchemes.News | UriSchemes.Custom);
}
}
return false;
}
private static string FormatString (string str, UriSchemes scheme, UriKind uriKind,
UriComponents component, UriFormat uriFormat, FormatFlags formatFlags)
{
var s = new StringBuilder ();
int len = str.Length;
for (int i = 0; i < len; i++) {
char c = str [i];
if (c == '%') {
int iStart = i;
char surrogate;
bool invalidUnescape;
char x = Uri.HexUnescapeMultiByte (str, ref i, out surrogate, out invalidUnescape);
if (invalidUnescape
) {
s.Append (c);
i = iStart;
continue;
}
string cStr = str.Substring (iStart, i-iStart);
s.Append (FormatChar (x, surrogate, cStr, scheme, uriKind, component, uriFormat, formatFlags));
i--;
} else
s.Append (FormatChar (c, char.MinValue, "" + c, scheme, uriKind, component, uriFormat, formatFlags));
}
return s.ToString ();
}
private static string FormatChar (char c, char surrogate, string cStr, UriSchemes scheme, UriKind uriKind,
UriComponents component, UriFormat uriFormat, FormatFlags formatFlags)
{
var isEscaped = cStr.Length != 1;
var userEscaped = (formatFlags & FormatFlags.UserEscaped) != 0;
if (!isEscaped && !userEscaped && NeedToEscape (c, scheme, component, uriKind, uriFormat, formatFlags))
return HexEscapeMultiByte (c);
if (isEscaped && (
(userEscaped && c < 0xFF) ||
!NeedToUnescape (c, scheme, component, uriKind, uriFormat, formatFlags))) {
if (IriParsing &&
(c == '<' || c == '>' || c == '^' || c == '{' || c == '|' || c == '}' || c > 0x7F) &&
(formatFlags & FormatFlags.HasUriCharactersToNormalize) != 0)
return cStr.ToUpperInvariant (); //Upper case escape
return cStr; //Keep original case
}
if ((formatFlags & FormatFlags.NoSlashReplace) == 0 &&
c == '\\' && component == UriComponents.Path) {
if (!IriParsing && uriFormat != UriFormat.UriEscaped &&
SchemeContains (scheme, UriSchemes.Http | UriSchemes.Https))
return "/";
if (SchemeContains (scheme, UriSchemes.Http | UriSchemes.Https | UriSchemes.Ftp | UriSchemes.CustomWithHost))
return (isEscaped && uriFormat != UriFormat.UriEscaped) ? "\\" : "/";
if (SchemeContains (scheme, UriSchemes.NetPipe | UriSchemes.NetTcp | UriSchemes.File))
return "/";
if (SchemeContains (scheme, UriSchemes.Custom) &&
(formatFlags & FormatFlags.HasWindowsPath) == 0)
return "/";
}
var ret = c.ToString (CultureInfo.InvariantCulture);
if (surrogate != char.MinValue)
ret += surrogate.ToString (CultureInfo.InvariantCulture);
return ret;
}
private static bool NeedToUnescape(char c, UriSchemes scheme, UriComponents component, UriKind uriKind,
UriFormat uriFormat, FormatFlags formatFlags)
{
if ((formatFlags & FormatFlags.IPv6Host) != 0)
{
return(false);
}
if (uriFormat == UriFormat.Unescaped)
{
return(true);
}
UriSchemes sDecoders = UriSchemes.NetPipe | UriSchemes.NetTcp;
if (!IriParsing)
{
sDecoders |= UriSchemes.Http | UriSchemes.Https;
}
if (c == '/' || c == '\\')
{
if (!IriParsing && uriKind == UriKind.Absolute && uriFormat != UriFormat.UriEscaped &&
uriFormat != UriFormat.SafeUnescaped)
{
return(true);
}
if (SchemeContains(scheme, UriSchemes.File))
{
return(component != UriComponents.Fragment &&
(component != UriComponents.Query || !IriParsing));
}
return(component != UriComponents.Query && component != UriComponents.Fragment &&
SchemeContains(scheme, sDecoders));
}
if (c == '?')
{
//Avoid creating new query
if (SupportsQuery(scheme) && component == UriComponents.Path)
{
return(false);
}
if (!IriParsing && uriFormat == ToStringUnescape)
{
if (SupportsQuery(scheme))
{
return(component == UriComponents.Query || component == UriComponents.Fragment);
}
return(component == UriComponents.Fragment);
}
return(false);
}
if (c == '#')
{
return(false);
}
if (uriFormat == ToStringUnescape && !IriParsing)
{
if (uriKind == UriKind.Relative)
{
return(false);
}
switch (c)
{
case '$':
case '&':
case '+':
case ',':
case ';':
case '=':
case '@':
return(true);
}
if (c < 0x20 || c == 0x7f)
{
return(true);
}
}
if (uriFormat == UriFormat.SafeUnescaped || uriFormat == ToStringUnescape)
{
switch (c)
{
case '-':
case '.':
case '_':
case '~':
return(true);
case ' ':
case '!':
case '"':
case '\'':
case '(':
case ')':
case '*':
case '<':
case '>':
case '^':
case '`':
case '{':
case '}':
case '|':
return(uriKind != UriKind.Relative ||
(IriParsing && (formatFlags & FormatFlags.HasUriCharactersToNormalize) != 0));
case ':':
case '[':
case ']':
return(uriKind != UriKind.Relative);
}
if ((c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z') || (c >= '0' && c <= '9'))
{
return(true);
}
if (c > 0x7f)
{
return(true);
}
return(false);
}
if (uriFormat == UriFormat.UriEscaped)
{
if (!IriParsing)
{
if (c == '.')
{
if (SchemeContains(scheme, UriSchemes.File))
{
return(component != UriComponents.Fragment);
}
return(component != UriComponents.Query && component != UriComponents.Fragment &&
SchemeContains(scheme, sDecoders));
}
return(false);
}
switch (c)
{
case '-':
case '.':
case '_':
case '~':
return(true);
}
if ((formatFlags & FormatFlags.HasUriCharactersToNormalize) != 0)
{
switch (c)
{
case '!':
case '\'':
case '(':
case ')':
case '*':
case ':':
case '[':
case ']':
return(true);
}
}
if ((c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z') || (c >= '0' && c <= '9'))
{
return(true);
}
return(false);
}
return(false);
}
internal static bool SupportsQuery (UriSchemes scheme)
{
if (SchemeContains (scheme, UriSchemes.File))
return IriParsing;
return !SchemeContains (scheme, UriSchemes.Ftp | UriSchemes.Gopher | UriSchemes.Nntp | UriSchemes.Telnet | UriSchemes.News);
}
internal static bool SchemeContains(UriSchemes keys, UriSchemes flag)
{
return((keys & flag) != 0);
}
private static string Format(string str, string schemeName, UriKind uriKind,
UriComponents component, UriFormat uriFormat, FormatFlags formatFlags)
{
if (string.IsNullOrEmpty(str))
{
return("");
}
if (UriHelper.HasCharactersToNormalize(str))
{
formatFlags |= UriHelper.FormatFlags.HasComponentCharactersToNormalize | FormatFlags.HasUriCharactersToNormalize;
}
if (component == UriComponents.Fragment && UriHelper.HasPercentage(str))
{
formatFlags |= UriHelper.FormatFlags.HasFragmentPercentage;
}
if (component == UriComponents.Host &&
str.Length > 1 && str [0] == '[' && str [str.Length - 1] == ']')
{
formatFlags |= UriHelper.FormatFlags.IPv6Host;
}
if (component == UriComponents.Path &&
str.Length >= 2 && str [1] != ':' &&
('a' <= str [0] && str [0] <= 'z') || ('A' <= str [0] && str [0] <= 'Z'))
{
formatFlags |= UriHelper.FormatFlags.HasWindowsPath;
}
UriSchemes scheme = GetScheme(schemeName);
if (scheme == UriSchemes.Custom && (formatFlags & FormatFlags.HasHost) != 0)
{
scheme = UriSchemes.CustomWithHost;
}
var reduceAfter = UriSchemes.Http | UriSchemes.Https | UriSchemes.File | UriSchemes.NetPipe | UriSchemes.NetTcp;
if (IriParsing)
{
reduceAfter |= UriSchemes.Ftp;
}
else if (component == UriComponents.Path &&
(formatFlags & FormatFlags.NoSlashReplace) == 0)
{
if (scheme == UriSchemes.Ftp)
{
str = Reduce(str.Replace('\\', '/'), !IriParsing);
}
if (scheme == UriSchemes.CustomWithHost)
{
str = Reduce(str.Replace('\\', '/'), false);
}
}
str = FormatString(str, scheme, uriKind, component, uriFormat, formatFlags);
if (component == UriComponents.Path &&
(formatFlags & FormatFlags.NoReduce) == 0)
{
if (SchemeContains(scheme, reduceAfter))
{
str = Reduce(str, !IriParsing);
}
if (IriParsing && scheme == UriSchemes.CustomWithHost)
{
str = Reduce(str, false);
}
}
return(str);
}
public void WriteRecordRoute(UriSchemes scheme, ByteArrayPart host, int port)
{
Write(C.RecordRoute, C.HCOLON, C.SP, C.LAQUOT, scheme.ToByteArrayPart(), C.HCOLON, host, C.HCOLON);
Write(port);
Write(C.SEMI, C.lr, C.RAQUOT, C.CRLF);
}
private static bool NeedToEscape(char c, UriSchemes scheme, UriComponents component, UriKind uriKind,
UriFormat uriFormat, FormatFlags formatFlags)
{
if ((formatFlags & FormatFlags.IPv6Host) != 0)
{
return(false);
}
if (c == '?')
{
if (uriFormat == UriFormat.Unescaped)
{
return(false);
}
if (!SupportsQuery(scheme))
{
return(component != UriComponents.Fragment);
}
return(false);
}
if (c == '#')
{
//Avoid removing fragment
if (component == UriComponents.Path || component == UriComponents.Query)
{
return(false);
}
if (component == UriComponents.Fragment &&
(uriFormat == ToStringUnescape || uriFormat == UriFormat.SafeUnescaped) &&
(formatFlags & FormatFlags.HasFragmentPercentage) != 0)
{
return(true);
}
return(false);
}
if (uriFormat == UriFormat.SafeUnescaped || uriFormat == ToStringUnescape)
{
if (c == '%')
{
return(uriKind != UriKind.Relative);
}
}
if (uriFormat == UriFormat.SafeUnescaped)
{
if (c < 0x20 || c == 0x7F)
{
return(true);
}
}
if (uriFormat == UriFormat.UriEscaped)
{
if (c < 0x20 || c >= 0x7F)
{
return(component != UriComponents.Host);
}
switch (c)
{
case ' ':
case '"':
case '%':
case '<':
case '>':
case '^':
case '`':
case '{':
case '}':
case '|':
return(true);
case '[':
case ']':
return(true);
case '\\':
return(component != UriComponents.Path ||
SchemeContains(scheme,
UriSchemes.Gopher | UriSchemes.Ldap | UriSchemes.Mailto | UriSchemes.Nntp |
UriSchemes.Telnet | UriSchemes.News | UriSchemes.Custom));
}
}
return(false);
}
public void WriteRecordRoute(UriSchemes scheme, ByteArrayPart host, int port)
{
Write(C.RecordRoute, C.HCOLON, C.SP, C.LAQUOT, scheme.ToByteArrayPart(), C.HCOLON, host, C.HCOLON);
Write(port);
Write(C.SEMI, C.lr, C.RAQUOT, C.CRLF);
}
public void WriteRequestLine(Methods method, UriSchemes scheme, ByteArrayPart user, ByteArrayPart domain)
{
Method = method;
Write(method.ToByteArrayPart(), C.SP);
Write(scheme.ToByteArrayPart(), C.HCOLON, user, C.At, domain);
Write(C.SP, C.SIP_2_0, C.CRLF);
}
private static string FormatChar(char c, char surrogate, string cStr, UriSchemes scheme, UriKind uriKind,
UriComponents component, UriFormat uriFormat, FormatFlags formatFlags)
{
var isEscaped = cStr.Length != 1;
var userEscaped = (formatFlags & FormatFlags.UserEscaped) != 0;
if (!isEscaped && !userEscaped && NeedToEscape(c, scheme, component, uriKind, uriFormat, formatFlags))
{
return(HexEscapeMultiByte(c));
}
if (isEscaped && (
#if NET_4_0
(userEscaped && c < 0xFF) ||
#endif
!NeedToUnescape(c, scheme, component, uriKind, uriFormat, formatFlags)))
{
if (IriParsing &&
(c == '<' || c == '>' || c == '^' || c == '{' || c == '|' || c == '}' || c > 0x7F) &&
(formatFlags & FormatFlags.HasUriCharactersToNormalize) != 0)
{
return(cStr.ToUpperInvariant()); //Upper case escape
}
return(cStr); //Keep original case
}
if ((formatFlags & FormatFlags.NoSlashReplace) == 0 &&
c == '\\' && component == UriComponents.Path)
{
if (!IriParsing && uriFormat != UriFormat.UriEscaped &&
SchemeContains(scheme, UriSchemes.Http | UriSchemes.Https))
{
return("/");
}
if (SchemeContains(scheme, UriSchemes.Http | UriSchemes.Https | UriSchemes.Ftp | UriSchemes.CustomWithHost))
{
return((isEscaped && uriFormat != UriFormat.UriEscaped) ? "\\" : "/");
}
if (SchemeContains(scheme, UriSchemes.NetPipe | UriSchemes.NetTcp | UriSchemes.File))
{
return("/");
}
if (SchemeContains(scheme, UriSchemes.Custom) &&
(formatFlags & FormatFlags.HasWindowsPath) == 0)
{
return("/");
}
}
var ret = c.ToString(CultureInfo.InvariantCulture);
if (surrogate != char.MinValue)
{
ret += surrogate.ToString(CultureInfo.InvariantCulture);
}
return(ret);
}
