From 2a1cd4fda8a4a8e649910d16b4dfa1ce7ae63543 Mon Sep 17 00:00:00 2001
From: chai <215380520@qq.com>
Date: Fri, 12 May 2023 09:24:40 +0800
Subject: *misc

---
 .../CSV-Parser/CSV Parser/src/CSVParser.cs         | 181 +++++++++++++++++++++
 1 file changed, 181 insertions(+)
 create mode 100644 marching/Assets/ThirdParty/CSV-Parser/CSV Parser/src/CSVParser.cs

(limited to 'marching/Assets/ThirdParty/CSV-Parser/CSV Parser/src/CSVParser.cs')

diff --git a/marching/Assets/ThirdParty/CSV-Parser/CSV Parser/src/CSVParser.cs b/marching/Assets/ThirdParty/CSV-Parser/CSV Parser/src/CSVParser.cs
new file mode 100644
index 0000000..c886c19
--- /dev/null
+++ b/marching/Assets/ThirdParty/CSV-Parser/CSV Parser/src/CSVParser.cs	
@@ -0,0 +1,181 @@
+/*
+ * CSV Parser for C#.
+ *
+ * These codes are licensed under CC0.
+ * https://github.com/yutokun/CSV-Parser
+ */
+
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.IO;
+using System.Text;
+using System.Text.RegularExpressions;
+using System.Threading.Tasks;
+
+namespace yutokun
+{
+    public static class CSVParser
+    {
+        /// <summary>
+        /// Load CSV data from specified path.
+        /// </summary>
+        /// <param name="path">CSV file path.</param>
+        /// <param name="delimiter">Delimiter.</param>
+        /// <param name="encoding">Type of text encoding. (default UTF-8)</param>
+        /// <returns>Nested list that CSV parsed.</returns>
+        public static List<List<string>> LoadFromPath(string path, Delimiter delimiter = Delimiter.Auto, Encoding encoding = null)
+        {
+            encoding = encoding ?? Encoding.UTF8;
+
+            if (delimiter == Delimiter.Auto)
+            {
+                delimiter = EstimateDelimiter(path);
+            }
+
+            var data = File.ReadAllText(path, encoding);
+            return Parse(data, delimiter);
+        }
+
+        /// <summary>
+        /// Load CSV data asynchronously from specified path.
+        /// </summary>
+        /// <param name="path">CSV file path.</param>
+        /// <param name="delimiter">Delimiter.</param>
+        /// <param name="encoding">Type of text encoding. (default UTF-8)</param>
+        /// <returns>Nested list that CSV parsed.</returns>
+        public static async Task<List<List<string>>> LoadFromPathAsync(string path, Delimiter delimiter = Delimiter.Auto, Encoding encoding = null)
+        {
+            encoding = encoding ?? Encoding.UTF8;
+
+            if (delimiter == Delimiter.Auto)
+            {
+                delimiter = EstimateDelimiter(path);
+            }
+
+            using (var reader = new StreamReader(path, encoding))
+            {
+                var data = await reader.ReadToEndAsync();
+                return Parse(data, delimiter);
+            }
+        }
+
+        static Delimiter EstimateDelimiter(string path)
+        {
+            var extension = Path.GetExtension(path);
+            if (extension.Equals(".csv", StringComparison.OrdinalIgnoreCase))
+            {
+                return Delimiter.Comma;
+            }
+
+            if (extension.Equals(".tsv", StringComparison.OrdinalIgnoreCase))
+            {
+                return Delimiter.Tab;
+            }
+
+            throw new Exception($"Delimiter estimation failed. Unknown Extension: {extension}");
+        }
+
+        /// <summary>
+        /// Load CSV data from string.
+        /// </summary>
+        /// <param name="data">CSV string</param>
+        /// <param name="delimiter">Delimiter.</param>
+        /// <returns>Nested list that CSV parsed.</returns>
+        public static List<List<string>> LoadFromString(string data, Delimiter delimiter = Delimiter.Comma)
+        {
+            if (delimiter == Delimiter.Auto) throw new InvalidEnumArgumentException("Delimiter estimation from string is not supported.");
+            return Parse(data, delimiter);
+        }
+
+        static List<List<string>> Parse(string data, Delimiter delimiter)
+        {
+            ConvertToCrlf(ref data);
+
+            var sheet = new List<List<string>>();
+            var row = new List<string>();
+            var cell = new StringBuilder();
+            var insideQuoteCell = false;
+            var start = 0;
+
+            var delimiterSpan = delimiter.ToChar().ToString().AsSpan();
+            var crlfSpan = "\r\n".AsSpan();
+            var oneDoubleQuotSpan = "\"".AsSpan();
+            var twoDoubleQuotSpan = "\"\"".AsSpan();
+
+            while (start < data.Length)
+            {
+                var length = start <= data.Length - 2 ? 2 : 1;
+                var span = data.AsSpan(start, length);
+
+                if (span.StartsWith(delimiterSpan))
+                {
+                    if (insideQuoteCell)
+                    {
+                        cell.Append(delimiter.ToChar());
+                    }
+                    else
+                    {
+                        AddCell(row, cell);
+                    }
+
+                    start += 1;
+                }
+                else if (span.StartsWith(crlfSpan))
+                {
+                    if (insideQuoteCell)
+                    {
+                        cell.Append("\r\n");
+                    }
+                    else
+                    {
+                        AddCell(row, cell);
+                        AddRow(sheet, ref row);
+                    }
+
+                    start += 2;
+                }
+                else if (span.StartsWith(twoDoubleQuotSpan))
+                {
+                    cell.Append("\"");
+                    start += 2;
+                }
+                else if (span.StartsWith(oneDoubleQuotSpan))
+                {
+                    insideQuoteCell = !insideQuoteCell;
+                    start += 1;
+                }
+                else
+                {
+                    cell.Append(span[0]);
+                    start += 1;
+                }
+            }
+
+            if (row.Count > 0 || cell.Length > 0)
+            {
+                AddCell(row, cell);
+                AddRow(sheet, ref row);
+            }
+
+            return sheet;
+        }
+
+        static void AddCell(List<string> row, StringBuilder cell)
+        {
+            row.Add(cell.ToString());
+            cell.Length = 0; // Old C#.
+        }
+
+        static void AddRow(List<List<string>> sheet, ref List<string> row)
+        {
+            sheet.Add(row);
+            row = new List<string>();
+        }
+
+        static void ConvertToCrlf(ref string data)
+        {
+            data = Regex.Replace(data, @"\r\n|\r|\n", "\r\n");
+        }
+    }
+}
-- 
cgit v1.1-26-g67d0