Example usage for com.google.common.hash Hashing sha1

Introduction

In this page you can find the example usage for com.google.common.hash Hashing sha1.

Prototype

public static HashFunction sha1()

Source Link

Document

Returns a hash function implementing the SHA-1 algorithm (160 hash bits) by delegating to the SHA-1 MessageDigest .

Usage

From source file:com.facebook.buck.features.apple.project.ProjectGenerator.java

private static Path getDerivedSourcesDirectoryForBuildTarget(BuildTarget buildTarget, ProjectFilesystem fs) {
    String fullTargetName = buildTarget.getFullyQualifiedName();
    byte[] utf8Bytes = fullTargetName.getBytes(Charset.forName("UTF-8"));

    Hasher hasher = Hashing.sha1().newHasher();
    hasher.putBytes(utf8Bytes);/* www  . j  ava  2 s  . c  om*/

    String targetSha1Hash = hasher.hash().toString();
    String targetFolderName = buildTarget.getShortName() + "-" + targetSha1Hash;

    Path xcodeDir = fs.getBuckPaths().getXcodeDir();
    Path derivedSourcesDir = xcodeDir.resolve("derived-sources").resolve(targetFolderName);

    return derivedSourcesDir;
}

From source file:com.facebook.buck.features.apple.project.ProjectGenerator.java

private Path getFilenameToHeadersPath(TargetNode<? extends CxxLibraryDescription.CommonArg> targetNode,
        String suffix) {/* ww  w  .ja  v  a2s .c o  m*/
    String hashedPath = BaseEncoding.base64Url().omitPadding()
            .encode(Hashing.sha1()
                    .hashString(targetNode.getBuildTarget().getUnflavoredBuildTarget().getFullyQualifiedName(),
                            Charsets.UTF_8)
                    .asBytes())
            .substring(0, 10);
    return Paths.get(hashedPath + suffix);
}