dgrove@google.com
39889f6270
Reviewed at desk by rnystrom, since gcl upload fails when there are binary images in the change. TBR=rnystrom@google.com git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@10776 260f80e4-7a28-3924-810f-c04153c831b5
78 lines
2.5 KiB
Dart
78 lines
2.5 KiB
Dart
// Copyright (c) 2012, 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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// Generic utility functions.
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/** Turns [name] into something that's safe to use as a file name. */
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String sanitize(String name) => name.replaceAll(':', '_').replaceAll('/', '_');
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/** Returns the number of times [search] occurs in [text]. */
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int countOccurrences(String text, String search) {
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int start = 0;
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int count = 0;
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while (true) {
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start = text.indexOf(search, start);
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if (start == -1) break;
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count++;
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// Offsetting by search length means overlapping results are not counted.
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start += search.length;
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}
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return count;
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}
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/** Repeats [text] [count] times, separated by [separator] if given. */
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String repeat(String text, int count, [String separator]) {
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// TODO(rnystrom): Should be in corelib.
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final buffer = new StringBuffer();
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for (int i = 0; i < count; i++) {
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buffer.add(text);
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if ((i < count - 1) && (separator !== null)) buffer.add(separator);
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}
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return buffer.toString();
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}
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/** Removes up to [indentation] leading whitespace characters from [text]. */
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String unindent(String text, int indentation) {
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var start;
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for (start = 0; start < Math.min(indentation, text.length); start++) {
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// Stop if we hit a non-whitespace character.
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if (text[start] != ' ') break;
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}
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return text.substring(start);
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}
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/** Sorts the map by the key, doing a case-insensitive comparison. */
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List<Mirror> orderByName(Collection<Mirror> list) {
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final elements = new List<Mirror>.from(list);
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elements.sort((a,b) {
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String aName = a.simpleName;
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String bName = b.simpleName;
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bool doma = aName.startsWith(@"$dom");
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bool domb = bName.startsWith(@"$dom");
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return doma == domb ? aName.compareTo(bName) : doma ? 1 : -1;
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});
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return elements;
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}
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/**
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* Joins [items] into a single, comma-separated string using [conjunction].
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* E.g. `['A', 'B', 'C']` becomes `"A, B, and C"`.
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*/
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String joinWithCommas(List<String> items, [String conjunction = 'and']) {
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if (items.length == 1) return items[0];
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if (items.length == 2) return "${items[0]} $conjunction ${items[1]}";
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return '${Strings.join(items.getRange(0, items.length - 1), ', ')}'
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', $conjunction ${items[items.length - 1]}';
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}
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void writeString(File file, String text) {
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var randomAccessFile = file.openSync(FileMode.WRITE);
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randomAccessFile.writeStringSync(text);
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randomAccessFile.closeSync();
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}
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