963 lines
31 KiB
C#
963 lines
31 KiB
C#
//using System;
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using System;
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using System.Collections.Generic;
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using System.Globalization;
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using System.Security;
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using System.Text;
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using System.Text.RegularExpressions;
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namespace Godot
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{
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public static class StringExtensions
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{
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private static int get_slice_count(this string instance, string splitter)
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{
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if (instance.empty() || splitter.empty())
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return 0;
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int pos = 0;
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int slices = 1;
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while ((pos = instance.find(splitter, pos)) >= 0)
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{
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slices++;
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pos += splitter.Length;
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}
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return slices;
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}
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private static string get_slicec(this string instance, char splitter, int slice)
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{
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if (!instance.empty() && slice >= 0)
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{
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int i = 0;
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int prev = 0;
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int count = 0;
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while (true)
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{
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if (instance[i] == 0 || instance[i] == splitter)
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{
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if (slice == count)
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{
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return instance.Substring(prev, i - prev);
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}
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else
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{
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count++;
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prev = i + 1;
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}
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}
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i++;
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}
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}
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return string.Empty;
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}
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// <summary>
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// If the string is a path to a file, return the path to the file without the extension.
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// </summary>
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public static string basename(this string instance)
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{
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int index = instance.LastIndexOf('.');
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if (index > 0)
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return instance.Substring(0, index);
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return instance;
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}
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// <summary>
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// Return true if the strings begins with the given string.
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// </summary>
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public static bool begins_with(this string instance, string text)
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{
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return instance.StartsWith(text);
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}
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// <summary>
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// Return the bigrams (pairs of consecutive letters) of this string.
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// </summary>
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public static string[] bigrams(this string instance)
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{
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string[] b = new string[instance.Length - 1];
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for (int i = 0; i < b.Length; i++)
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{
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b[i] = instance.Substring(i, 2);
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}
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return b;
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}
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// <summary>
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// Return a copy of the string with special characters escaped using the C language standard.
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// </summary>
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public static string c_escape(this string instance)
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{
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StringBuilder sb = new StringBuilder(string.Copy(instance));
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sb.Replace("\\", "\\\\");
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sb.Replace("\a", "\\a");
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sb.Replace("\b", "\\b");
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sb.Replace("\f", "\\f");
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sb.Replace("\n", "\\n");
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sb.Replace("\r", "\\r");
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sb.Replace("\t", "\\t");
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sb.Replace("\v", "\\v");
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sb.Replace("\'", "\\'");
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sb.Replace("\"", "\\\"");
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sb.Replace("?", "\\?");
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return sb.ToString();
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}
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// <summary>
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// Return a copy of the string with escaped characters replaced by their meanings according to the C language standard.
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// </summary>
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public static string c_unescape(this string instance)
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{
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StringBuilder sb = new StringBuilder(string.Copy(instance));
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sb.Replace("\\a", "\a");
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sb.Replace("\\b", "\b");
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sb.Replace("\\f", "\f");
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sb.Replace("\\n", "\n");
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sb.Replace("\\r", "\r");
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sb.Replace("\\t", "\t");
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sb.Replace("\\v", "\v");
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sb.Replace("\\'", "\'");
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sb.Replace("\\\"", "\"");
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sb.Replace("\\?", "?");
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sb.Replace("\\\\", "\\");
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return sb.ToString();
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}
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// <summary>
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// Change the case of some letters. Replace underscores with spaces, convert all letters to lowercase then capitalize first and every letter following the space character. For [code]capitalize camelCase mixed_with_underscores[/code] it will return [code]Capitalize Camelcase Mixed With Underscores[/code].
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// </summary>
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public static string capitalize(this string instance)
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{
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string aux = instance.Replace("_", " ").ToLower();
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string cap = string.Empty;
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for (int i = 0; i < aux.get_slice_count(" "); i++)
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{
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string slice = aux.get_slicec(' ', i);
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if (slice.Length > 0)
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{
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slice = char.ToUpper(slice[0]) + slice.Substring(1);
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if (i > 0)
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cap += " ";
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cap += slice;
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}
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}
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return cap;
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}
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// <summary>
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// Perform a case-sensitive comparison to another string, return -1 if less, 0 if equal and +1 if greater.
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// </summary>
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public static int casecmp_to(this string instance, string to)
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{
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if (instance.empty())
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return to.empty() ? 0 : -1;
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if (to.empty())
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return 1;
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int instance_idx = 0;
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int to_idx = 0;
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while (true)
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{
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if (to[to_idx] == 0 && instance[instance_idx] == 0)
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return 0; // We're equal
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else if (instance[instance_idx] == 0)
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return -1; // If this is empty, and the other one is not, then we're less... I think?
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else if (to[to_idx] == 0)
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return 1; // Otherwise the other one is smaller...
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else if (instance[instance_idx] < to[to_idx]) // More than
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return -1;
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else if (instance[instance_idx] > to[to_idx]) // Less than
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return 1;
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instance_idx++;
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to_idx++;
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}
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}
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// <summary>
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// Return true if the string is empty.
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// </summary>
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public static bool empty(this string instance)
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{
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return string.IsNullOrEmpty(instance);
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}
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// <summary>
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// Return true if the strings ends with the given string.
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// </summary>
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public static bool ends_with(this string instance, string text)
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{
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return instance.EndsWith(text);
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}
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// <summary>
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// Erase [code]chars[/code] characters from the string starting from [code]pos[/code].
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// </summary>
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public static void erase(this StringBuilder instance, int pos, int chars)
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{
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instance.Remove(pos, chars);
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}
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// <summary>
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// If the string is a path to a file, return the extension.
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// </summary>
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public static string extension(this string instance)
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{
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int pos = instance.find_last(".");
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if (pos < 0)
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return instance;
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return instance.Substring(pos + 1, instance.Length);
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}
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// <summary>
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// Find the first occurrence of a substring, return the starting position of the substring or -1 if not found. Optionally, the initial search index can be passed.
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// </summary>
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public static int find(this string instance, string what, int from = 0)
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{
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return instance.IndexOf(what, StringComparison.OrdinalIgnoreCase);
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}
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// <summary>
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// Find the last occurrence of a substring, return the starting position of the substring or -1 if not found. Optionally, the initial search index can be passed.
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// </summary>
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public static int find_last(this string instance, string what)
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{
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return instance.LastIndexOf(what, StringComparison.OrdinalIgnoreCase);
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}
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// <summary>
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// Find the first occurrence of a substring but search as case-insensitive, return the starting position of the substring or -1 if not found. Optionally, the initial search index can be passed.
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// </summary>
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public static int findn(this string instance, string what, int from = 0)
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{
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return instance.IndexOf(what, StringComparison.Ordinal);
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}
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// <summary>
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// If the string is a path to a file, return the base directory.
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// </summary>
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public static string get_base_dir(this string instance)
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{
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int basepos = instance.find("://");
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string rs = string.Empty;
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string @base = string.Empty;
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if (basepos != -1)
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{
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int end = basepos + 3;
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rs = instance.Substring(end, instance.Length);
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@base = instance.Substring(0, end);
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}
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else
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{
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if (instance.begins_with("/"))
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{
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rs = instance.Substring(1, instance.Length);
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@base = "/";
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}
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else
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{
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rs = instance;
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}
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}
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int sep = Mathf.max(rs.find_last("/"), rs.find_last("\\"));
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if (sep == -1)
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return @base;
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return @base + rs.substr(0, sep);
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}
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// <summary>
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// If the string is a path to a file, return the file and ignore the base directory.
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// </summary>
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public static string get_file(this string instance)
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{
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int sep = Mathf.max(instance.find_last("/"), instance.find_last("\\"));
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if (sep == -1)
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return instance;
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return instance.Substring(sep + 1, instance.Length);
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}
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// <summary>
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// Hash the string and return a 32 bits integer.
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// </summary>
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public static int hash(this string instance)
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{
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int index = 0;
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int hashv = 5381;
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int c;
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while ((c = (int)instance[index++]) != 0)
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hashv = ((hashv << 5) + hashv) + c; // hash * 33 + c
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return hashv;
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}
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// <summary>
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// Convert a string containing an hexadecimal number into an int.
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// </summary>
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public static int hex_to_int(this string instance)
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{
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int sign = 1;
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if (instance[0] == '-')
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{
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sign = -1;
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instance = instance.Substring(1);
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}
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if (!instance.StartsWith("0x"))
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return 0;
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return sign * int.Parse(instance.Substring(2), NumberStyles.HexNumber);
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}
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// <summary>
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// Insert a substring at a given position.
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// </summary>
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public static string insert(this string instance, int pos, string what)
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{
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return instance.Insert(pos, what);
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}
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// <summary>
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// If the string is a path to a file or directory, return true if the path is absolute.
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// </summary>
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public static bool is_abs_path(this string instance)
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{
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return System.IO.Path.IsPathRooted(instance);
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}
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// <summary>
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// If the string is a path to a file or directory, return true if the path is relative.
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// </summary>
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public static bool is_rel_path(this string instance)
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{
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return !System.IO.Path.IsPathRooted(instance);
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}
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// <summary>
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// Check whether this string is a subsequence of the given string.
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// </summary>
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public static bool is_subsequence_of(this string instance, string text, bool case_insensitive)
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{
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int len = instance.Length;
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if (len == 0)
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return true; // Technically an empty string is subsequence of any string
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if (len > text.Length)
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return false;
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int src = 0;
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int tgt = 0;
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while (instance[src] != 0 && text[tgt] != 0)
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{
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bool match = false;
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if (case_insensitive)
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{
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char srcc = char.ToLower(instance[src]);
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char tgtc = char.ToLower(text[tgt]);
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match = srcc == tgtc;
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}
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else
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{
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match = instance[src] == text[tgt];
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}
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if (match)
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{
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src++;
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if (instance[src] == 0)
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return true;
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}
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tgt++;
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}
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return false;
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}
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// <summary>
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// Check whether this string is a subsequence of the given string, considering case.
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// </summary>
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public static bool is_subsequence_of(this string instance, string text)
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{
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return instance.is_subsequence_of(text, false);
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}
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// <summary>
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// Check whether this string is a subsequence of the given string, without considering case.
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// </summary>
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public static bool is_subsequence_ofi(this string instance, string text)
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{
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return instance.is_subsequence_of(text, true);
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}
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// <summary>
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// Check whether the string contains a valid float.
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// </summary>
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public static bool is_valid_float(this string instance)
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{
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float f;
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return float.TryParse(instance, out f);
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}
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// <summary>
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// Check whether the string contains a valid color in HTML notation.
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// </summary>
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public static bool is_valid_html_color(this string instance)
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{
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return Color.html_is_valid(instance);
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}
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// <summary>
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// Check whether the string is a valid identifier. As is common in programming languages, a valid identifier may contain only letters, digits and underscores (_) and the first character may not be a digit.
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// </summary>
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public static bool is_valid_identifier(this string instance)
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{
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int len = instance.Length;
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if (len == 0)
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return false;
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for (int i = 0; i < len; i++)
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{
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if (i == 0)
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{
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if (instance[0] >= '0' && instance[0] <= '9')
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return false; // Don't start with number plz
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}
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bool valid_char = (instance[i] >= '0' && instance[i] <= '9') || (instance[i] >= 'a' && instance[i] <= 'z') || (instance[i] >= 'A' && instance[i] <= 'Z') || instance[i] == '_';
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if (!valid_char)
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return false;
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}
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return true;
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}
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// <summary>
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// Check whether the string contains a valid integer.
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// </summary>
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public static bool is_valid_integer(this string instance)
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{
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int f;
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return int.TryParse(instance, out f);
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}
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// <summary>
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// Check whether the string contains a valid IP address.
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// </summary>
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public static bool is_valid_ip_address(this string instance)
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{
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string[] ip = instance.split(".");
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if (ip.Length != 4)
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return false;
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for (int i = 0; i < ip.Length; i++)
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{
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string n = ip[i];
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if (!n.is_valid_integer())
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return false;
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int val = n.to_int();
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if (val < 0 || val > 255)
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return false;
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}
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return true;
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}
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// <summary>
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// Return a copy of the string with special characters escaped using the JSON standard.
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// </summary>
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public static string json_escape(this string instance)
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{
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StringBuilder sb = new StringBuilder(string.Copy(instance));
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sb.Replace("\\", "\\\\");
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sb.Replace("\b", "\\b");
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sb.Replace("\f", "\\f");
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sb.Replace("\n", "\\n");
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sb.Replace("\r", "\\r");
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sb.Replace("\t", "\\t");
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sb.Replace("\v", "\\v");
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sb.Replace("\"", "\\\"");
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return sb.ToString();
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}
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// <summary>
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// Return an amount of characters from the left of the string.
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// </summary>
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public static string left(this string instance, int pos)
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{
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if (pos <= 0)
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return string.Empty;
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if (pos >= instance.Length)
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return instance;
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return instance.Substring(0, pos);
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}
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/// <summary>
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/// Return the length of the string in characters.
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/// </summary>
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public static int length(this string instance)
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{
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return instance.Length;
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}
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// <summary>
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// Do a simple expression match, where '*' matches zero or more arbitrary characters and '?' matches any single character except '.'.
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// </summary>
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public static bool expr_match(this string instance, string expr, bool case_sensitive)
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{
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if (expr.Length == 0 || instance.Length == 0)
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return false;
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switch (expr[0])
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{
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case '\0':
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return instance[0] == 0;
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case '*':
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return expr_match(expr + 1, instance, case_sensitive) || (instance[0] != 0 && expr_match(expr, instance + 1, case_sensitive));
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case '?':
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return instance[0] != 0 && instance[0] != '.' && expr_match(expr + 1, instance + 1, case_sensitive);
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default:
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return (case_sensitive ? instance[0] == expr[0] : char.ToUpper(instance[0]) == char.ToUpper(expr[0])) &&
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expr_match(expr + 1, instance + 1, case_sensitive);
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}
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}
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// <summary>
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// Do a simple case sensitive expression match, using ? and * wildcards (see [method expr_match]).
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// </summary>
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public static bool match(this string instance, string expr)
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{
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return instance.expr_match(expr, true);
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}
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// <summary>
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// Do a simple case insensitive expression match, using ? and * wildcards (see [method expr_match]).
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// </summary>
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public static bool matchn(this string instance, string expr)
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{
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return instance.expr_match(expr, false);
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}
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// <summary>
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// Return the MD5 hash of the string as an array of bytes.
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// </summary>
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public static byte[] md5_buffer(this string instance)
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{
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|
return NativeCalls.godot_icall_String_md5_buffer(instance);
|
|
}
|
|
|
|
// <summary>
|
|
// Return the MD5 hash of the string as a string.
|
|
// </summary>
|
|
public static string md5_text(this string instance)
|
|
{
|
|
return NativeCalls.godot_icall_String_md5_text(instance);
|
|
}
|
|
|
|
// <summary>
|
|
// Perform a case-insensitive comparison to another string, return -1 if less, 0 if equal and +1 if greater.
|
|
// </summary>
|
|
public static int nocasecmp_to(this string instance, string to)
|
|
{
|
|
if (instance.empty())
|
|
return to.empty() ? 0 : -1;
|
|
|
|
if (to.empty())
|
|
return 1;
|
|
|
|
int instance_idx = 0;
|
|
int to_idx = 0;
|
|
|
|
while (true)
|
|
{
|
|
if (to[to_idx] == 0 && instance[instance_idx] == 0)
|
|
return 0; // We're equal
|
|
else if (instance[instance_idx] == 0)
|
|
return -1; // If this is empty, and the other one is not, then we're less... I think?
|
|
else if (to[to_idx] == 0)
|
|
return 1; // Otherwise the other one is smaller..
|
|
else if (char.ToUpper(instance[instance_idx]) < char.ToUpper(to[to_idx])) // More than
|
|
return -1;
|
|
else if (char.ToUpper(instance[instance_idx]) > char.ToUpper(to[to_idx])) // Less than
|
|
return 1;
|
|
|
|
instance_idx++;
|
|
to_idx++;
|
|
}
|
|
}
|
|
|
|
// <summary>
|
|
// Return the character code at position [code]at[/code].
|
|
// </summary>
|
|
public static int ord_at(this string instance, int at)
|
|
{
|
|
return instance[at];
|
|
}
|
|
|
|
// <summary>
|
|
// Format a number to have an exact number of [code]digits[/code] after the decimal point.
|
|
// </summary>
|
|
public static string pad_decimals(this string instance, int digits)
|
|
{
|
|
int c = instance.find(".");
|
|
|
|
if (c == -1)
|
|
{
|
|
if (digits <= 0)
|
|
return instance;
|
|
|
|
instance += ".";
|
|
c = instance.Length - 1;
|
|
}
|
|
else
|
|
{
|
|
if (digits <= 0)
|
|
return instance.Substring(0, c);
|
|
}
|
|
|
|
if (instance.Length - (c + 1) > digits)
|
|
{
|
|
instance = instance.Substring(0, c + digits + 1);
|
|
}
|
|
else
|
|
{
|
|
while (instance.Length - (c + 1) < digits)
|
|
{
|
|
instance += "0";
|
|
}
|
|
}
|
|
|
|
return instance;
|
|
}
|
|
|
|
// <summary>
|
|
// Format a number to have an exact number of [code]digits[/code] before the decimal point.
|
|
// </summary>
|
|
public static string pad_zeros(this string instance, int digits)
|
|
{
|
|
string s = instance;
|
|
int end = s.find(".");
|
|
|
|
if (end == -1)
|
|
end = s.Length;
|
|
|
|
if (end == 0)
|
|
return s;
|
|
|
|
int begin = 0;
|
|
|
|
while (begin < end && (s[begin] < '0' || s[begin] > '9'))
|
|
{
|
|
begin++;
|
|
}
|
|
|
|
if (begin >= end)
|
|
return s;
|
|
|
|
while (end - begin < digits)
|
|
{
|
|
s = s.Insert(begin, "0");
|
|
end++;
|
|
}
|
|
|
|
return s;
|
|
}
|
|
|
|
// <summary>
|
|
// Decode a percent-encoded string. See [method percent_encode].
|
|
// </summary>
|
|
public static string percent_decode(this string instance)
|
|
{
|
|
return Uri.UnescapeDataString(instance);
|
|
}
|
|
|
|
// <summary>
|
|
// Percent-encode a string. This is meant to encode parameters in a URL when sending a HTTP GET request and bodies of form-urlencoded POST request.
|
|
// </summary>
|
|
public static string percent_encode(this string instance)
|
|
{
|
|
return Uri.EscapeDataString(instance);
|
|
}
|
|
|
|
// <summary>
|
|
// If the string is a path, this concatenates [code]file[/code] at the end of the string as a subpath. E.g. [code]"this/is".plus_file("path") == "this/is/path"[/code].
|
|
// </summary>
|
|
public static string plus_file(this string instance, string file)
|
|
{
|
|
if (instance.Length > 0 && instance[instance.Length - 1] == '/')
|
|
return instance + file;
|
|
else
|
|
return instance + "/" + file;
|
|
}
|
|
|
|
// <summary>
|
|
// Replace occurrences of a substring for different ones inside the string.
|
|
// </summary>
|
|
public static string replace(this string instance, string what, string forwhat)
|
|
{
|
|
return instance.Replace(what, forwhat);
|
|
}
|
|
|
|
// <summary>
|
|
// Replace occurrences of a substring for different ones inside the string, but search case-insensitive.
|
|
// </summary>
|
|
public static string replacen(this string instance, string what, string forwhat)
|
|
{
|
|
return Regex.Replace(instance, what, forwhat, RegexOptions.IgnoreCase);
|
|
}
|
|
|
|
// <summary>
|
|
// Perform a search for a substring, but start from the end of the string instead of the beginning.
|
|
// </summary>
|
|
public static int rfind(this string instance, string what, int from = -1)
|
|
{
|
|
return NativeCalls.godot_icall_String_rfind(instance, what, from);
|
|
}
|
|
|
|
// <summary>
|
|
// Perform a search for a substring, but start from the end of the string instead of the beginning. Also search case-insensitive.
|
|
// </summary>
|
|
public static int rfindn(this string instance, string what, int from = -1)
|
|
{
|
|
return NativeCalls.godot_icall_String_rfindn(instance, what, from);
|
|
}
|
|
|
|
// <summary>
|
|
// Return the right side of the string from a given position.
|
|
// </summary>
|
|
public static string right(this string instance, int pos)
|
|
{
|
|
if (pos >= instance.Length)
|
|
return instance;
|
|
|
|
if (pos < 0)
|
|
return string.Empty;
|
|
|
|
return instance.Substring(pos, (instance.Length - pos));
|
|
}
|
|
|
|
public static byte[] sha256_buffer(this string instance)
|
|
{
|
|
return NativeCalls.godot_icall_String_sha256_buffer(instance);
|
|
}
|
|
|
|
// <summary>
|
|
// Return the SHA-256 hash of the string as a string.
|
|
// </summary>
|
|
public static string sha256_text(this string instance)
|
|
{
|
|
return NativeCalls.godot_icall_String_sha256_text(instance);
|
|
}
|
|
|
|
// <summary>
|
|
// Return the similarity index of the text compared to this string. 1 means totally similar and 0 means totally dissimilar.
|
|
// </summary>
|
|
public static float similarity(this string instance, string text)
|
|
{
|
|
if (instance == text)
|
|
{
|
|
// Equal strings are totally similar
|
|
return 1.0f;
|
|
}
|
|
if (instance.Length < 2 || text.Length < 2)
|
|
{
|
|
// No way to calculate similarity without a single bigram
|
|
return 0.0f;
|
|
}
|
|
|
|
string[] src_bigrams = instance.bigrams();
|
|
string[] tgt_bigrams = text.bigrams();
|
|
|
|
int src_size = src_bigrams.Length;
|
|
int tgt_size = tgt_bigrams.Length;
|
|
|
|
float sum = src_size + tgt_size;
|
|
float inter = 0;
|
|
|
|
for (int i = 0; i < src_size; i++)
|
|
{
|
|
for (int j = 0; j < tgt_size; j++)
|
|
{
|
|
if (src_bigrams[i] == tgt_bigrams[j])
|
|
{
|
|
inter++;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
return (2.0f * inter) / sum;
|
|
}
|
|
|
|
// <summary>
|
|
// Split the string by a divisor string, return an array of the substrings. Example "One,Two,Three" will return ["One","Two","Three"] if split by ",".
|
|
// </summary>
|
|
public static string[] split(this string instance, string divisor, bool allow_empty = true)
|
|
{
|
|
return instance.Split(new string[] { divisor }, StringSplitOptions.RemoveEmptyEntries);
|
|
}
|
|
|
|
// <summary>
|
|
// Split the string in floats by using a divisor string, return an array of the substrings. Example "1,2.5,3" will return [1,2.5,3] if split by ",".
|
|
// </summary>
|
|
public static float[] split_floats(this string instance, string divisor, bool allow_empty = true)
|
|
{
|
|
List<float> ret = new List<float>();
|
|
int from = 0;
|
|
int len = instance.Length;
|
|
|
|
while (true)
|
|
{
|
|
int end = instance.find(divisor, from);
|
|
if (end < 0)
|
|
end = len;
|
|
if (allow_empty || (end > from))
|
|
ret.Add(float.Parse(instance.Substring(from)));
|
|
if (end == len)
|
|
break;
|
|
|
|
from = end + divisor.Length;
|
|
}
|
|
|
|
return ret.ToArray();
|
|
}
|
|
|
|
private static readonly char[] non_printable = {
|
|
(char)00, (char)01, (char)02, (char)03, (char)04, (char)05,
|
|
(char)06, (char)07, (char)08, (char)09, (char)10, (char)11,
|
|
(char)12, (char)13, (char)14, (char)15, (char)16, (char)17,
|
|
(char)18, (char)19, (char)20, (char)21, (char)22, (char)23,
|
|
(char)24, (char)25, (char)26, (char)27, (char)28, (char)29,
|
|
(char)30, (char)31, (char)32
|
|
};
|
|
|
|
// <summary>
|
|
// Return a copy of the string stripped of any non-printable character at the beginning and the end. The optional arguments are used to toggle stripping on the left and right edges respectively.
|
|
// </summary>
|
|
public static string strip_edges(this string instance, bool left = true, bool right = true)
|
|
{
|
|
if (left)
|
|
{
|
|
if (right)
|
|
return instance.Trim(non_printable);
|
|
else
|
|
return instance.TrimStart(non_printable);
|
|
}
|
|
else
|
|
{
|
|
return instance.TrimEnd(non_printable);
|
|
}
|
|
}
|
|
|
|
// <summary>
|
|
// Return part of the string from the position [code]from[/code], with length [code]len[/code].
|
|
// </summary>
|
|
public static string substr(this string instance, int from, int len)
|
|
{
|
|
return instance.Substring(from, len);
|
|
}
|
|
|
|
// <summary>
|
|
// Convert the String (which is a character array) to PoolByteArray (which is an array of bytes). The conversion is speeded up in comparison to to_utf8() with the assumption that all the characters the String contains are only ASCII characters.
|
|
// </summary>
|
|
public static byte[] to_ascii(this string instance)
|
|
{
|
|
return Encoding.ASCII.GetBytes(instance);
|
|
}
|
|
|
|
// <summary>
|
|
// Convert a string, containing a decimal number, into a [code]float[/code].
|
|
// </summary>
|
|
public static float to_float(this string instance)
|
|
{
|
|
return float.Parse(instance);
|
|
}
|
|
|
|
// <summary>
|
|
// Convert a string, containing an integer number, into an [code]int[/code].
|
|
// </summary>
|
|
public static int to_int(this string instance)
|
|
{
|
|
return int.Parse(instance);
|
|
}
|
|
|
|
// <summary>
|
|
// Return the string converted to lowercase.
|
|
// </summary>
|
|
public static string to_lower(this string instance)
|
|
{
|
|
return instance.ToLower();
|
|
}
|
|
|
|
// <summary>
|
|
// Return the string converted to uppercase.
|
|
// </summary>
|
|
public static string to_upper(this string instance)
|
|
{
|
|
return instance.ToUpper();
|
|
}
|
|
|
|
// <summary>
|
|
// Convert the String (which is an array of characters) to PoolByteArray (which is an array of bytes). The conversion is a bit slower than to_ascii(), but supports all UTF-8 characters. Therefore, you should prefer this function over to_ascii().
|
|
// </summary>
|
|
public static byte[] to_utf8(this string instance)
|
|
{
|
|
return Encoding.UTF8.GetBytes(instance);
|
|
}
|
|
|
|
// <summary>
|
|
// Return a copy of the string with special characters escaped using the XML standard.
|
|
// </summary>
|
|
public static string xml_escape(this string instance)
|
|
{
|
|
return SecurityElement.Escape(instance);
|
|
}
|
|
|
|
// <summary>
|
|
// Return a copy of the string with escaped characters replaced by their meanings according to the XML standard.
|
|
// </summary>
|
|
public static string xml_unescape(this string instance)
|
|
{
|
|
return SecurityElement.FromString(instance).Text;
|
|
}
|
|
}
|
|
}
|