< Summary

Information

Class:	ValidateLib.Encoding.Bom.BomDetector
Assembly:	validatelib.dll
File(s):	C:\skola_karlovka\RP\code\csv-validator\CSV_Validator\ValidateLib\Encoding\Bom\BomDetector.cs

Line coverage

87%

Branch coverage

N/A

Method coverage

Feature is only available for sponsors

Metrics

Method	Blocks covered	Blocks not covered
ContainsUtf8Bom(...)	8	3

#	Line	Line coverage
	`1`	`namespace ValidateLib.Encoding.Bom`
	`2`	`{`
	`3`	`/// <summary>`
	`4`	`/// Checks whether the first few bytes of a file contain a UTF-8 BOM (Byte Order Mark).`
	`5`	`/// </summary>`
	`6`	`internal class BomDetector`
	`7`	`{`
	`8`	`/// <summary>`
	`9`	`/// Checks if the provided file stream contains a UTF-8 BOM.`
	`10`	`/// </summary>`
	`11`	`/// <param name="fs">The file stream to check.</param>`
	`12`	`/// <returns>True if the file stream contains a UTF-8 BOM, otherwise false.</returns>`
	`13`	`public static bool ContainsUtf8Bom(FileStream fs)`
	`14`	`{`
1	`15`	`if (fs.Length < 3)`
0	`16`	`return false;`
	`17`
	`18`	`// Store the current position in the stream`
1	`19`	`long originalPosition = fs.Position;`
	`20`
	`21`	`// Read the first three bytes`
1	`22`	`byte[] bomBytes = new byte[3];`
1	`23`	`fs.Read(bomBytes, 0, 3);`
	`24`
	`25`	`// Check for UTF-8 BOM (EF BB BF)`
1	`26`	`bool hasUtf8Bom = bomBytes[0] == 0xEF && bomBytes[1] == 0xBB && bomBytes[2] == 0xBF;`
	`27`
	`28`	`// Reset the position in the stream`
1	`29`	`fs.Seek(originalPosition, SeekOrigin.Begin);`
	`30`
1	`31`	`return hasUtf8Bom;`
	`32`	`}`
	`33`	`}`
	`34`	`}`