DigestOutput

Inject a digest filter into an output stream, updating the digest as information flows through it. Here's an example where we calculate an MD5 digest as a side-effect of copying a file:

auto output = new DigestOutput(new FileOutput("output"), new Md5);
output.copy (new FileInput("input"));

Stdout.formatln ("hex digest: {}", output.digest.hexDigest);

class DigestOutput : OutputFilter , InputFilter.Mutator {

this(OutputStream stream, Digest digest);

size_t write(const(void)[] src);

Digest digest();

}

Constructors

this this(OutputStream stream, Digest digest): Accepts any output stream, and any digest derivation.

Members

Functions

digest Digest digest(): Return the Digest instance we were created with. Use this to access the resultant binary or hex digest value.
write size_t write(const(void)[] src): Write to conduit from a source array. The provided src content will be written to the conduit.

Inherited Members

From OutputFilter

sink OutputStream sink;: Undocumented in source.
conduit IConduit conduit [@property getter]: Return the hosting conduit.
write size_t write(const(void)[] src): Write to conduit from a source array. The provided src content will be written to the conduit.
copy OutputStream copy(InputStream src, size_t max): Transfer the content of another conduit to this one. Returns a reference to this class, or throws IOException on failure.
flush IOStream flush(): Emit/purge buffered content.
seek long seek(long offset, Anchor anchor): Seek on this stream. Target conduits that don't support seeking will throw an IOException.
output OutputStream output [@property getter]: Return the upstream host of this filter.
close void close(): Close the output.