Checksum

Object Hierarchy:

Description:

[ Compact ]
[ Version ( since = "2.16" ) ]
[ CCode ( free_function = "g_checksum_free" , type_id = "G_TYPE_CHECKSUM" ) ]
public class Checksum

An opaque structure representing a checksumming operation.

To create a new GChecksum, use Checksum. To free a GChecksum, use g_checksum_free.

Example: Compute the checksum of a file:

public static int main (string[] args) {
	Checksum checksum = new Checksum (ChecksumType.MD5);

	FileStream stream = FileStream.open (args[0], "rb");
	uint8 fbuf[100];
	size_t size;

	while ((size = stream.read (fbuf)) > 0) {
		checksum.update (fbuf, size);
	}

	unowned string digest = checksum.get_string ();
	print ("%s: %s\n", args[0], digest);
	return 0;
}

valac --pkg glib-2.0 GLib.Checksum.vala

Namespace: GLib

Package: glib-2.0

Content:

Static methods:

public static string compute_for_bytes (ChecksumType checksum_type, Bytes data)
Computes the checksum for a binary data.
public static string compute_for_data (ChecksumType checksum_type, uchar[] data)
Computes the checksum for a binary data of data.length.
public static string compute_for_string (ChecksumType checksum_type, string str, size_t length = -1)
Computes the checksum of a string.

Creation methods:

public Checksum (ChecksumType checksum_type)
Creates a new Checksum, using the checksum algorithm checksum_type.

Methods:

public Checksum copy ()
Copies a Checksum.
public void get_digest (uint8[] buffer, ref size_t digest_len)
Gets the digest from this as a raw binary vector and places it into buffer.
public unowned string get_string ()
Gets the digest as a hexadecimal string.
public void update (uchar[] data, size_t length)
Feeds data into an existing Checksum .