Adding integrated tile server

[simantics/district.git] / org.simantics.maps.server / node / node-v4.8.0-win-x64 / node_modules / npm / node_modules / sha / index.js

diff --git a/org.simantics.maps.server/node/node-v4.8.0-win-x64/node_modules/npm/node_modules/sha/index.js b/org.simantics.maps.server/node/node-v4.8.0-win-x64/node_modules/npm/node_modules/sha/index.js
new file mode 100644 (file)
index 0000000..44e7b4b
--- /dev/null
+++ b/org.simantics.maps.server/node/node-v4.8.0-win-x64/node_modules/npm/node_modules/sha/index.js
@@ -0,0 +1,107 @@
+'use strict'
+
+var Transform = require('stream').Transform || require('readable-stream').Transform
+var crypto = require('crypto')
+var fs = require('graceful-fs')
+
+exports.check = check
+exports.checkSync = checkSync
+exports.get = get
+exports.getSync = getSync
+exports.stream = stream
+
+function check(file, expected, options, cb) {
+  if (typeof options === 'function') {
+    cb = options
+    options = undefined
+  }
+  expected = expected.toLowerCase().trim()
+  get(file, options, function (er, actual) {
+    if (er) {
+      if (er.message) er.message += ' while getting shasum for ' + file
+      return cb(er)
+    }
+    if (actual === expected) return cb(null)
+    cb(new Error(
+        'shasum check failed for ' + file + '\n'
+      + 'Expected: ' + expected + '\n'
+      + 'Actual:   ' + actual))
+  })
+}
+function checkSync(file, expected, options) {
+  expected = expected.toLowerCase().trim()
+  var actual
+  try {
+    actual = getSync(file, options)
+  } catch (er) {
+    if (er.message) er.message += ' while getting shasum for ' + file
+    throw er
+  }
+  if (actual !== expected) {
+    var ex = new Error(
+        'shasum check failed for ' + file + '\n'
+      + 'Expected: ' + expected + '\n'
+      + 'Actual:   ' + actual)
+    throw ex
+  }
+}
+
+
+function get(file, options, cb) {
+  if (typeof options === 'function') {
+    cb = options
+    options = undefined
+  }
+  options = options || {}
+  var algorithm = options.algorithm || 'sha1'
+  var hash = crypto.createHash(algorithm)
+  var source = fs.createReadStream(file)
+  var errState = null
+  source
+    .on('error', function (er) {
+      if (errState) return
+      return cb(errState = er)
+    })
+    .on('data', function (chunk) {
+      if (errState) return
+      hash.update(chunk)
+    })
+    .on('end', function () {
+      if (errState) return
+      var actual = hash.digest("hex").toLowerCase().trim()
+      cb(null, actual)
+    })
+}
+
+function getSync(file, options) {
+  options = options || {}
+  var algorithm = options.algorithm || 'sha1'
+  var hash = crypto.createHash(algorithm)
+  var source = fs.readFileSync(file)
+  hash.update(source)
+  return hash.digest("hex").toLowerCase().trim()
+}
+
+function stream(expected, options) {
+  expected = expected.toLowerCase().trim()
+  options = options || {}
+  var algorithm = options.algorithm || 'sha1'
+  var hash = crypto.createHash(algorithm)
+
+  var stream = new Transform()
+  stream._transform = function (chunk, encoding, callback) {
+    hash.update(chunk)
+    stream.push(chunk)
+    callback()
+  }
+  stream._flush = function (cb) {
+    var actual = hash.digest("hex").toLowerCase().trim()
+    if (actual === expected) return cb(null)
+    cb(new Error(
+        'shasum check failed for:\n'
+      + '  Expected: ' + expected + '\n'
+      + '  Actual:   ' + actual))
+    this.push(null)
+  }
+  return stream
+}
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