pkg/analyzer: support latest pkg/crypto version

tools/addlatexhash.dart

 #!/usr/bin/env dart
 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 //
 // ----------------------------------------------------------------------
 // This is a very specialized tool which was created in order to support
 // adding hash values used as location markers in the LaTeX source of the
 // language specification.  It is intended to take its input file as the
 // first argument, an output file name as the second argument, and a
 // hash listing file name as the third argument. From docs/language a
 // typical usage would be as follows:
 //
-//   dart ../../tools/addlatexhash.dart dartLangSpec.tex out.tex hash.txt
+//   dart
+//     --package-root=<build dir>/packages \ 
+//     ../../tools/addlatexhash.dart dartLangSpec.tex out.tex hash.txt
 //
 // This will produce a normalized variant out.tex of the language
 // specification with hash values filled in, and a listing hash.txt of
 // all the hash values along with the label of their textual context
 // (section, subsection, subsubsection, paragraph) .  For more details,
 // please check the language specification source itself.
 //
 // NB: This utility assumes UN*X style line endings, \n, in the LaTeX
 // source file receieved as input; it will not work with other styles.
 
 import 'dart:io';
 import 'dart:convert';
-import '../third_party/pkg/utf/lib/utf.dart';
-import '../third_party/pkg/crypto/lib/crypto.dart';
+
+import 'package:crypto/crypto.dart';
+import 'package:convert/convert.dart';
+import 'package:utf/utf.dart';
 
 // ----------------------------------------------------------------------
 // Normalization of the text: removal or normalization of parts that
 // do not affect the output from latex, such as white space.
 
 final commentRE = new RegExp(r"[^\\]%.*");  // NB: . does not match \n.
 final whitespaceAllRE = new RegExp(r"^\s+$");
 final whitespaceRE = new RegExp(r"(?:(?=\s).){2,}");  // \s except end-of-line
 
 /// Removes [match]ing part of [line], adjusting that part with the
@@ skipping 438 matching lines @@
 gatherLines(lines, startIndex, nextIndex) =>
     lines.getRange(startIndex, nextIndex)
       .takeWhile(isntHashBlockTerminator)
       .map(cleanupLine)
       .join(" ");
 
 /// Computes the hash value for the line block starting at [startIndex]
 /// in [lines], stopping just before [nextIndex].  SIDE EFFECT:
 /// Outputs the simplified text and its hash value to [listSink].
 computeHashValue(lines, startIndex, nextIndex, listSink) {
-  final hashEncoder = new SHA1();
   final gatheredLine = gatherLines(lines, startIndex, nextIndex);
   final simplifiedLine = simplifyLine(gatheredLine);
   listSink.write("  % $simplifiedLine\n");
-  hashEncoder.add(encodeUtf8(simplifiedLine));
-  return hashEncoder.close();
+  var digest = sha1.convert(encodeUtf8(simplifiedLine));
+  return digest.bytes;
 }
 
 computeHashString(lines, startIndex, nextIndex, listSink) =>
-    CryptoUtils.bytesToHex(computeHashValue(lines,
+    hex.encode(computeHashValue(lines,
                                             startIndex,
                                             nextIndex,
                                             listSink));
 
 /// Computes and adds hashes to \LMHash{} lines in [lines] (which
 /// must be on the line numbers specified in [hashEvents]), and emits
 /// sectioning markers and hash values to [listSink], along with
 /// "comments" containing the simplified text (using the format
 /// '  % <text>', where the text is one, long line, for easy grepping
 /// etc.).
@@ skipping 52 matching lines @@
   normalizedLines = multilineNormalize(normalizedLines);
 
   // Insert hash values.
   var hashEvents = findHashEvents(normalizedLines);
   addHashMarks(normalizedLines, hashEvents, listSink);
 
   // Produce/finalize output.
   outputFile.writeAsStringSync(normalizedLines.join());
   listSink.close();
 }