err.js

var clone = require("./").Clone.clone;

function errorLog(err) {
  console.error(err);
}

// Look up this known commit.
function getCommit(repo) {
  // Use a known commit sha from this repository.
  return repo.getCommit("59b20b8d5c6ff8d09518454d4dd8b7b30f095ab5");
}

// Look up a specific file within that commit.
function getReadme(commit) {
  return commit.getEntry("README.md");
}

// Get the blob contents from the file.
function getBlob(entry) {
    // Patch the blob to contain a reference to the entry.
  return entry.getBlob()
    .then(function attachEntry(blob) {
      blob.entry = entry;
      return blob;
    });
}

// Display information about the blob.
function showBlob(blob) {
  // Show the name, sha, and filesize in byes.
  console.log(blob.entry.name() + blob.entry.sha() + blob.size() + "b");

  // Show a spacer.
  console.log(Array(72).join("=") + "\n\n");

  // Show the entire file.
  console.log(String(blob));
}

// Clone a given repository into a specific folder.
clone("https://github.com/nodegit/nodegit", "tmp", null)
  .then(getCommit)
  .then(getReadme)
  .then(getBlob)
  .then(showBlob)
  .catch(errorLog);