Alternatief vir HttpUtility vir NET 3.5 SP1 kliënt raamwerk?
https://stackoverflow.com/questions/36315
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09-06-2019 - |
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Dit sal regtig lekker om te teiken my Windows Vorms app om die NET 3.5 SP1 kliënt raamwerk wees. Maar, nou Ek gebruik die HttpUtility.HtmlDecode en HttpUtility.UrlDecode funksies, en die MSDN dokumentasie nie verwys na enige alternatiewe binnekant van, sê, System.Net of iets.
So, kort van reflectoring die bron-kode en kopiëring dit in my gemeente --- wat ek dink nie die moeite werd sou wees --- is daar alternatiewe binnekant van die NET 3.5 SP1 kliënt raamwerk wat jy weet van, om hierdie funksie te vervang? Dit lyk 'n bietjie vreemd dat hulle hierdie nuttige funksies te server-net-kode sal beperk.
Oplossing
Ek wil ten sterkste aanbeveel nie rollende jou eie enkodering. Ek sal die Microsoft Anti-Kruis site scripting Biblioteek wat baie klein (v1.5 is ~ 30kb) as HttpUtility.HtmlEncode is nie beskikbaar nie.
As vir dekodering, miskien kan jy die dekodering roetine gebruik van Mono ?
Ander wenke
vandag gevind uit hierdie hier min webwerf dat HtmlEncode / Decode kan gedoen word gebruik van System.Net biblioteek in C # 4,0 kliëntprofiel:
Uri.EscapeDataString(...)
WebUtility.HtmlEncode(...)
Edit: Ek weer lees dat die vraag toegepas vir die 3.5 kliënt Framework maar miskien kan dit nuttig wees diegene wat opgedateer 4.0 ..
Ek omgekeerde ontwerp die Microsoft System.Net.WebUtility klas van NET 4.0 behulp Reflector (Ek dink hulle ok sal wees met dit gegewe die omstandighede). Sodat jy kan óf gebruik NET 4.0 kliënt Raamwerk (wat nou hierdie nuwe klas) of gebruik die kode hier.
Solank as wat jy 'n sterk naam gebruik op jou vergadering ens, sal jy veilig genoeg wees. Hier:
/// <summary>
/// Taken from System.Net in 4.0, useful until we move to .NET 4.0 - needed for Client Profile
/// </summary>
public static class WebUtility
{
// Fields
private static char[] _htmlEntityEndingChars = new char[] { ';', '&' };
// Methods
public static string HtmlDecode(string value)
{
if (string.IsNullOrEmpty(value))
{
return value;
}
if (value.IndexOf('&') < 0)
{
return value;
}
StringWriter output = new StringWriter(CultureInfo.InvariantCulture);
HtmlDecode(value, output);
return output.ToString();
}
public static void HtmlDecode(string value, TextWriter output)
{
if (value != null)
{
if (output == null)
{
throw new ArgumentNullException("output");
}
if (value.IndexOf('&') < 0)
{
output.Write(value);
}
else
{
int length = value.Length;
for (int i = 0; i < length; i++)
{
char ch = value[i];
if (ch == '&')
{
int num3 = value.IndexOfAny(_htmlEntityEndingChars, i + 1);
if ((num3 > 0) && (value[num3] == ';'))
{
string entity = value.Substring(i + 1, (num3 - i) - 1);
if ((entity.Length > 1) && (entity[0] == '#'))
{
ushort num4;
if ((entity[1] == 'x') || (entity[1] == 'X'))
{
ushort.TryParse(entity.Substring(2), NumberStyles.AllowHexSpecifier, (IFormatProvider)NumberFormatInfo.InvariantInfo, out num4);
}
else
{
ushort.TryParse(entity.Substring(1), NumberStyles.Integer, (IFormatProvider)NumberFormatInfo.InvariantInfo, out num4);
}
if (num4 != 0)
{
ch = (char)num4;
i = num3;
}
}
else
{
i = num3;
char ch2 = HtmlEntities.Lookup(entity);
if (ch2 != '\0')
{
ch = ch2;
}
else
{
output.Write('&');
output.Write(entity);
output.Write(';');
goto Label_0117;
}
}
}
}
output.Write(ch);
Label_0117: ;
}
}
}
}
public static string HtmlEncode(string value)
{
if (string.IsNullOrEmpty(value))
{
return value;
}
if (IndexOfHtmlEncodingChars(value, 0) == -1)
{
return value;
}
StringWriter output = new StringWriter(CultureInfo.InvariantCulture);
HtmlEncode(value, output);
return output.ToString();
}
public static unsafe void HtmlEncode(string value, TextWriter output)
{
if (value != null)
{
if (output == null)
{
throw new ArgumentNullException("output");
}
int num = IndexOfHtmlEncodingChars(value, 0);
if (num == -1)
{
output.Write(value);
}
else
{
int num2 = value.Length - num;
fixed (char* str = value)
{
char* chPtr = str;
char* chPtr2 = chPtr;
while (num-- > 0)
{
chPtr2++;
output.Write(chPtr2[0]);
}
while (num2-- > 0)
{
chPtr2++;
char ch = chPtr2[0];
if (ch <= '>')
{
switch (ch)
{
case '&':
{
output.Write("&");
continue;
}
case '\'':
{
output.Write("'");
continue;
}
case '"':
{
output.Write(""");
continue;
}
case '<':
{
output.Write("<");
continue;
}
case '>':
{
output.Write(">");
continue;
}
}
output.Write(ch);
continue;
}
if ((ch >= '\x00a0') && (ch < 'Ā'))
{
output.Write("&#");
output.Write(((int)ch).ToString(NumberFormatInfo.InvariantInfo));
output.Write(';');
}
else
{
output.Write(ch);
}
}
}
}
}
}
private static unsafe int IndexOfHtmlEncodingChars(string s, int startPos)
{
int num = s.Length - startPos;
fixed (char* str = s)
{
char* chPtr = str;
char* chPtr2 = chPtr + startPos;
while (num > 0)
{
char ch = chPtr2[0];
if (ch <= '>')
{
switch (ch)
{
case '&':
case '\'':
case '"':
case '<':
case '>':
return (s.Length - num);
case '=':
goto Label_0086;
}
}
else if ((ch >= '\x00a0') && (ch < 'Ā'))
{
return (s.Length - num);
}
Label_0086:
chPtr2++;
num--;
}
}
return -1;
}
// Nested Types
private static class HtmlEntities
{
// Fields
private static string[] _entitiesList = new string[] {
"\"-quot", "&-amp", "'-apos", "<-lt", ">-gt", "\x00a0-nbsp", "\x00a1-iexcl", "\x00a2-cent", "\x00a3-pound", "\x00a4-curren", "\x00a5-yen", "\x00a6-brvbar", "\x00a7-sect", "\x00a8-uml", "\x00a9-copy", "\x00aa-ordf",
"\x00ab-laquo", "\x00ac-not", "\x00ad-shy", "\x00ae-reg", "\x00af-macr", "\x00b0-deg", "\x00b1-plusmn", "\x00b2-sup2", "\x00b3-sup3", "\x00b4-acute", "\x00b5-micro", "\x00b6-para", "\x00b7-middot", "\x00b8-cedil", "\x00b9-sup1", "\x00ba-ordm",
"\x00bb-raquo", "\x00bc-frac14", "\x00bd-frac12", "\x00be-frac34", "\x00bf-iquest", "\x00c0-Agrave", "\x00c1-Aacute", "\x00c2-Acirc", "\x00c3-Atilde", "\x00c4-Auml", "\x00c5-Aring", "\x00c6-AElig", "\x00c7-Ccedil", "\x00c8-Egrave", "\x00c9-Eacute", "\x00ca-Ecirc",
"\x00cb-Euml", "\x00cc-Igrave", "\x00cd-Iacute", "\x00ce-Icirc", "\x00cf-Iuml", "\x00d0-ETH", "\x00d1-Ntilde", "\x00d2-Ograve", "\x00d3-Oacute", "\x00d4-Ocirc", "\x00d5-Otilde", "\x00d6-Ouml", "\x00d7-times", "\x00d8-Oslash", "\x00d9-Ugrave", "\x00da-Uacute",
"\x00db-Ucirc", "\x00dc-Uuml", "\x00dd-Yacute", "\x00de-THORN", "\x00df-szlig", "\x00e0-agrave", "\x00e1-aacute", "\x00e2-acirc", "\x00e3-atilde", "\x00e4-auml", "\x00e5-aring", "\x00e6-aelig", "\x00e7-ccedil", "\x00e8-egrave", "\x00e9-eacute", "\x00ea-ecirc",
"\x00eb-euml", "\x00ec-igrave", "\x00ed-iacute", "\x00ee-icirc", "\x00ef-iuml", "\x00f0-eth", "\x00f1-ntilde", "\x00f2-ograve", "\x00f3-oacute", "\x00f4-ocirc", "\x00f5-otilde", "\x00f6-ouml", "\x00f7-divide", "\x00f8-oslash", "\x00f9-ugrave", "\x00fa-uacute",
"\x00fb-ucirc", "\x00fc-uuml", "\x00fd-yacute", "\x00fe-thorn", "\x00ff-yuml", "Œ-OElig", "œ-oelig", "Š-Scaron", "š-scaron", "Ÿ-Yuml", "ƒ-fnof", "ˆ-circ", "˜-tilde", "Α-Alpha", "Β-Beta", "Γ-Gamma",
"Δ-Delta", "Ε-Epsilon", "Ζ-Zeta", "Η-Eta", "Θ-Theta", "Ι-Iota", "Κ-Kappa", "Λ-Lambda", "Μ-Mu", "Ν-Nu", "Ξ-Xi", "Ο-Omicron", "Π-Pi", "Ρ-Rho", "Σ-Sigma", "Τ-Tau",
"Υ-Upsilon", "Φ-Phi", "Χ-Chi", "Ψ-Psi", "Ω-Omega", "α-alpha", "β-beta", "γ-gamma", "δ-delta", "ε-epsilon", "ζ-zeta", "η-eta", "θ-theta", "ι-iota", "κ-kappa", "λ-lambda",
"μ-mu", "ν-nu", "ξ-xi", "ο-omicron", "π-pi", "ρ-rho", "ς-sigmaf", "σ-sigma", "τ-tau", "υ-upsilon", "φ-phi", "χ-chi", "ψ-psi", "ω-omega", "ϑ-thetasym", "ϒ-upsih",
"ϖ-piv", " -ensp", " -emsp", " -thinsp", "-zwnj", "-zwj", "-lrm", "-rlm", "–-ndash", "—-mdash", "‘-lsquo", "’-rsquo", "‚-sbquo", "“-ldquo", "”-rdquo", "„-bdquo",
"†-dagger", "‡-Dagger", "•-bull", "…-hellip", "‰-permil", "′-prime", "″-Prime", "‹-lsaquo", "›-rsaquo", "‾-oline", "⁄-frasl", "€-euro", "ℑ-image", "℘-weierp", "ℜ-real", "™-trade",
"ℵ-alefsym", "←-larr", "↑-uarr", "→-rarr", "↓-darr", "↔-harr", "↵-crarr", "⇐-lArr", "⇑-uArr", "⇒-rArr", "⇓-dArr", "⇔-hArr", "∀-forall", "∂-part", "∃-exist", "∅-empty",
"∇-nabla", "∈-isin", "∉-notin", "∋-ni", "∏-prod", "∑-sum", "−-minus", "∗-lowast", "√-radic", "∝-prop", "∞-infin", "∠-ang", "∧-and", "∨-or", "∩-cap", "∪-cup",
"∫-int", "∴-there4", "∼-sim", "≅-cong", "≈-asymp", "≠-ne", "≡-equiv", "≤-le", "≥-ge", "⊂-sub", "⊃-sup", "⊄-nsub", "⊆-sube", "⊇-supe", "⊕-oplus", "⊗-otimes",
"⊥-perp", "⋅-sdot", "⌈-lceil", "⌉-rceil", "⌊-lfloor", "⌋-rfloor", "〈-lang", "〉-rang", "◊-loz", "♠-spades", "♣-clubs", "♥-hearts", "♦-diams"
};
private static Dictionary<string, char> _lookupTable = GenerateLookupTable();
// Methods
private static Dictionary<string, char> GenerateLookupTable()
{
Dictionary<string, char> dictionary = new Dictionary<string, char>(StringComparer.Ordinal);
foreach (string str in _entitiesList)
{
dictionary.Add(str.Substring(2), str[0]);
}
return dictionary;
}
public static char Lookup(string entity)
{
char ch;
_lookupTable.TryGetValue(entity, out ch);
return ch;
}
}
}
Blykbaar google kon dit ook nie kry nie, so hulle het daar eie api-compatible weergawe:
Hier is 'n tydelike oplossing:
-
Stel Google se weergawe as 'n biblioteek
wget 'http://google-gdata.googlecode.com/svn/trunk/clients/cs/src/core/HttpUtility.cs' gmcs -t:library HttpUtility.cs -
your-project.cswysig om dit naamruimte sluitusing Google.GData.Client; // where HttpUtility lives -
heropstel met behulp van die biblioteek
gmcs your-project.cs -r:System.Web.Services -r:System.Web -r:HttpUtility
Van skrams by die bron-kode, blyk dit dat dit .NET 2.0-versoenbaar.
Ek het net my eerste hello world in csharp gister en ek het in hierdie probleem, so ek hoop dit help iemand anders.
Wanneer die aanspreek van Windows Phone en Desktop (kliënt profiel!) Wêreld die vinnigste manier wat ek gevind is:
private static string HtmlDecode(string text)
{
#if WINDOWS_PHONE
return System.Net.HttpUtility.HtmlDecode(text);
#else
return System.Net.WebUtility.HtmlDecode(text);
#endif
}
Die vreemde ding vir my was dat die naamruimte is System.Net , maar die naam klas verskil in die Windows Phone wêreld ... (hou nie daarvan om te gebruik System.Web / volledige profiel toe nie regtig nodig is en die System.Web word nie ondersteun op die Windows Tel platform in elk geval ...)
Die NET 3.5 SP1 kliëntprofiel Setup pakket is die "kap" weergawe van NET dat slegs sluit wat Microsoft sien om die "bruikbare" stukkies NET vir kliënt versoeke wees. So, nuttige dinge soos die HttpUtility klasse mis.
Vir meer inligting oor wat sien ScottGu se blog , soek vir" kliëntprofiel Setup pakket ".
As jy dit kan jy altyd onttrek System.Web.dll van die GAC kry (dit sal wees in c:\windows\Microsoft.NET\Framework\ ...) en sit dit met jou aansoek. Jy sal egter moet updates en service packs as jy sit op te spoor.
dalk beter wees om die treffer van die volle NET Framework ontplooiing neem.
Twee hoof maniere:
- Ontplooi die gebruik van die volle NET Framework
- Skryf jou eie / 3rd party lib vir hierdie funksies
