Alexander Thomas
3851591642
* Preserve empty lines in the file header. * Add empty entry to the tool's newly created sections. * Remove extra empty line at the end of the file. Change-Id: I271583774d5f5497025a9d85bcadf8b0b9e39e81 Reviewed-on: https://dart-review.googlesource.com/37600 Commit-Queue: Alexander Thomas <athom@google.com> Reviewed-by: William Hesse <whesse@google.com>
90 lines
2.9 KiB
Dart
90 lines
2.9 KiB
Dart
// Copyright (c) 2017, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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import 'canonical_status_file.dart';
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import 'dart:convert';
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StatusFile normalizeStatusFile(StatusFile statusFile) {
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StatusFile newStatusFile = _sortSectionsAndCombine(statusFile);
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newStatusFile.sections.forEach((section) {
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_sortEntriesInSection(section);
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_oneLineBetweenSections(section);
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});
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// Remove empty line at the end of the file
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newStatusFile.sections.last.entries.removeLast();
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return newStatusFile;
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}
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/// Sort section entries alphabetically.
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void _sortEntriesInSection(StatusSection section) {
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section.entries.sort((a, b) {
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if (a is CommentEntry) {
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return -1;
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}
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if (b is CommentEntry) {
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return 1;
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}
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if (a is StatusEntry && b is StatusEntry) {
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return a.path.compareTo(b.path);
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}
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if (a is StatusEntry) {
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return -1;
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}
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if (b is StatusEntry) {
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return 1;
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}
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return 0;
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});
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}
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/// Ensure that there is only one empty line to end a section.
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void _oneLineBetweenSections(StatusSection section) {
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section.entries.removeWhere((entry) => entry is EmptyEntry);
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section.entries
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.add(new EmptyEntry(section.lineNumber + section.entries.length + 1));
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}
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StatusFile _sortSectionsAndCombine(StatusFile statusFile) {
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// Create the new status file to be returned.
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StatusFile oldStatusFile = new StatusFile.parse(
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statusFile.path, LineSplitter.split(statusFile.toString()).toList());
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List<StatusSection> newSections = [];
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// Copy over all sections and normalize all the expressions.
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oldStatusFile.sections.forEach((section) {
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if (section.condition != null && section.isEmpty()) {
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return;
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}
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if (section.condition != null) {
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newSections.add(new StatusSection(section.condition.normalize(),
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section.lineNumber, section.sectionHeaderComments)
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..entries.addAll(section.entries));
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} else {
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newSections.add(section);
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}
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});
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// Sort the headers
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newSections.sort((a, b) {
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if (a.condition == null) {
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return -1;
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} else if (b.condition == null) {
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return 1;
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}
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return a.condition.compareTo(b.condition);
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});
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// See if we can combine section headers by simple comparison.
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StatusFile newStatusFile = new StatusFile(statusFile.path);
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newStatusFile.sections.add(newSections[0]);
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for (var i = 1; i < newSections.length; i++) {
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var previousSection = newSections[i - 1];
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var currentSection = newSections[i];
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if (previousSection.condition != null &&
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previousSection.condition.compareTo(currentSection.condition) == 0) {
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newStatusFile.sections.last.entries.addAll(currentSection.entries);
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} else {
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newStatusFile.sections.add(currentSection);
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}
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}
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return newStatusFile;
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}
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