101 lines
3.8 KiB
C#
101 lines
3.8 KiB
C#
//-----------------------------------------------------------------------
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// -----------------------------------------------------------------------
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// file="CodeLineHelper"
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// Project: StgSharp
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// AuthorGroup: Nitload Space
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// Copyright (c) Nitload Space. All rights reserved.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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//
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// -----------------------------------------------------------------------
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// -----------------------------------------------------------------------
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using System;
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using System.Collections.Generic;
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using System.Text;
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namespace StgSharp.Script
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{
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public static class CodeLineHelper
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{
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public static string SliceAndTrim(this string line, int startIndex)
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{
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if (line == null) {
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throw new ArgumentNullException(nameof(line));
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}
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if (startIndex < 0 || startIndex >= line.Length) {
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throw new ArgumentOutOfRangeException(nameof(startIndex));
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}
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ReadOnlySpan<char> sourceSpan = line.AsSpan();
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ReadOnlySpan<char> subSpan = sourceSpan.Slice(startIndex);
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int start = 0;
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while (start < subSpan.Length && char.IsWhiteSpace(subSpan[start])) {
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start++;
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}
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int end = subSpan.Length - 1;
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while (end >= start && char.IsWhiteSpace(subSpan[end])) {
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end--;
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}
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if (start > end) {
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return string.Empty;
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}
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int finalLength = end - start + 1;
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return new string(subSpan.Slice(start, finalLength));
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}
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public static string SliceAndTrim(this string line, int startIndex, int length)
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{
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if (line == null) {
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throw new ArgumentNullException(nameof(line));
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}
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if (startIndex < 0 || startIndex >= line.Length) {
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throw new ArgumentOutOfRangeException(nameof(startIndex));
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}
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if (length < 0 || startIndex + length > line.Length) {
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throw new ArgumentOutOfRangeException(nameof(length));
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}
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ReadOnlySpan<char> sourceSpan = line.AsSpan();
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ReadOnlySpan<char> subSpan = sourceSpan.Slice(startIndex, length);
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int start = 0;
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while (start < subSpan.Length && char.IsWhiteSpace(subSpan[start])) {
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start++;
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}
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int end = subSpan.Length - 1;
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while (end >= start && char.IsWhiteSpace(subSpan[end])) {
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end--;
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}
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if (start > end) {
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return string.Empty;
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}
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int finalLength = end - start + 1;
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return new string(subSpan.Slice(start, finalLength));
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}
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}
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}
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