Nejcraft/NejCommon.NET
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make all header file responses ascii compliant

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This commit is contained in:
honzapatCZ 2025-09-11 13:34:29 +02:00
parent 9659027b78
commit b692336c07
1 changed files with 35 additions and 1 deletions
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36
Controllers/ResponseEnricher.cs
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@ -1,3 +1,4 @@
using System.Globalization;
using System.Text; using System.Text;
using System.Xml; using System.Xml;
using System.Xml.Serialization; using System.Xml.Serialization;
@ -9,11 +10,44 @@ namespace NejCommon.Controllers;
public static class Responses public static class Responses
{ {
public static string ToAscii(string input)
{
if (string.IsNullOrEmpty(input))
return input;
// Normalize to FormD (decomposition)
string normalized = input.Normalize(NormalizationForm.FormD);
var sb = new StringBuilder();
foreach (char c in normalized)
{
var unicodeCategory = CharUnicodeInfo.GetUnicodeCategory(c);
// Skip non-spacing marks (accents, umlauts, etc.)
if (unicodeCategory != UnicodeCategory.NonSpacingMark)
{
sb.Append(c);
}
}
// Normalize back to FormC and remove any remaining non-ASCII chars
string cleaned = sb.ToString().Normalize(NormalizationForm.FormC);
// Ensure only ASCII characters remain
var ascii = new StringBuilder();
foreach (char c in cleaned)
{
ascii.Append(c <= 127 ? c : '?'); // replace non-ASCII with '?' or remove
}
return ascii.ToString();
}
public static FileStreamHttpResult RespondFileStream(this ControllerBase controller, Stream stream, string contentType, string fileName) public static FileStreamHttpResult RespondFileStream(this ControllerBase controller, Stream stream, string contentType, string fileName)
{ {
stream.Seek(0, SeekOrigin.Begin); stream.Seek(0, SeekOrigin.Begin);
controller.Response.Headers.Add("Content-Disposition", "inline; filename=" + fileName); controller.Response.Headers.Add("Content-Disposition", "inline; filename=" + ToAscii(fileName.Normalize(NormalizationForm.FormD)));
return TypedResults.File(stream, contentType, fileName); return TypedResults.File(stream, contentType, fileName);
} }
public static FileStreamHttpResult RespondXlsx(this ControllerBase controller, XLWorkbook file, string fileName) public static FileStreamHttpResult RespondXlsx(this ControllerBase controller, XLWorkbook file, string fileName)