轉自 https://www.cnblogs.com/lyh916/p/8588218.html
參考鏈接:
https://www.cnblogs.com/lulianqi/p/6385503.html
http://blog.csdn.net/paul342/article/details/22800137
說明:
1.寫入一個單元格時,如果含有逗號,則需要將整個字段用雙引號括起來;如果里面還有雙引號就替換成兩個雙引號。
2.寫入一行時,末尾要加上\r\n作為行分隔符。
3.讀取時,也要根據上面的寫入規則進行解析。
using System; using System.Collections; using System.Collections.Generic; using System.IO; using System.Text; using UnityEngine; public class CSVTool : MonoBehaviour { private static char _csvSeparator = ','; private static bool _trimColumns = false; //獲取一個單元格的寫入格式 public static string GetCSVFormat(string str) { string tempStr = str; if (str.Contains(",")) { if (str.Contains("\"")) { tempStr = str.Replace("\"", "\"\""); } tempStr = "\"" + tempStr + "\""; } return tempStr; } //獲取一行的寫入格式 public static string GetCSVFormatLine(List<string> strList) { string tempStr = ""; for (int i = 0; i < strList.Count - 1; i++) { string str = strList[i]; tempStr = tempStr + GetCSVFormat(str) + ","; } tempStr = tempStr + GetCSVFormat(strList[strList.Count - 1]) + "\r\n"; return tempStr; } //解析一行 public static List<string> ParseLine(string line) { StringBuilder _columnBuilder = new StringBuilder(); List<string> Fields = new List<string>(); bool inColum = false;//是否是在一個列元素里 bool inQuotes = false;//是否需要轉義 bool isNotEnd = false;//讀取完畢未結束轉義 _columnBuilder.Remove(0, _columnBuilder.Length); //空行也是一個空元素,一個逗號是2個空元素 if (line == "") { Fields.Add(""); } // Iterate through every character in the line 遍歷行中的每個字符 for (int i = 0; i < line.Length; i++) { char character = line[i]; //If we are not currently inside a column 如果我們現在不在一列中 if (!inColum) { // If the current character is a double quote then the column value is contained within //如果當前字符是雙引號,則列值包含在內 // double quotes, otherwise append the next character //雙引號,否則追加下一個字符 inColum = true; if (character == '"') { inQuotes = true; continue; } } // If we are in between double quotes 如果我們處在雙引號之間 if (inQuotes) { if ((i + 1) == line.Length)//這個字符已經結束了整行 { if (character == '"')//正常轉義結束,且該行已經結束 { inQuotes = false; continue; } else//異常結束,轉義未收尾 { isNotEnd = true; } } else if (character == '"' && line[i + 1] == _csvSeparator)//結束轉義,且后面有可能還有數據 { inQuotes = false; inColum = false; i++;//跳過下一個字符 } else if (character == '"' && line[i + 1] == '"')//雙引號轉義 { i++;//跳過下一個字符 } else if (character == '"')//雙引號單獨出現(這種情況實際上已經是格式錯誤,為了兼容暫時不處理) { throw new System.Exception("格式錯誤,錯誤的雙引號轉義"); } //其他情況直接跳出,后面正常添加 } else if (character == _csvSeparator) { inColum = false; } // If we are no longer in the column clear the builder and add the columns to the list ////結束該元素時inColumn置為false,並且不處理當前字符,直接進行Add if (!inColum) { Fields.Add(_trimColumns ? _columnBuilder.ToString().Trim() : _columnBuilder.ToString()); _columnBuilder.Remove(0, _columnBuilder.Length); } else//追加當前列 { _columnBuilder.Append(character); } } // If we are still inside a column add a new one (標准格式一行結尾不需要逗號結尾,而上面for是遇到逗號才添加的,為了兼容最后還要添加一次) if (inColum) { if (isNotEnd) { _columnBuilder.Append("\r\n"); } Fields.Add(_trimColumns ? _columnBuilder.ToString().Trim() : _columnBuilder.ToString()); } else //如果inColumn為false,說明已經添加,因為最后一個字符為分隔符,所以后面要加上一個空元素 { Fields.Add(""); } return Fields; } //讀取文件 public static List<List<string>> Read(string filePath, Encoding encoding) { List<List<string>> result = new List<List<string>>(); string content = File.ReadAllText(filePath,encoding); string[] lines = content.Split(new string[] { "\r\n" }, StringSplitOptions.RemoveEmptyEntries); for (int i = 0; i < lines.Length; i++) { List<string> line = ParseLine(lines[i]); result.Add(line); } return result; } //寫入文件 public static void Write(string filePath, Encoding encoding, List<List<string>> result) { StringBuilder builder = new StringBuilder(); for (int i = 0; i < result.Count; i++) { List<string> line = result[i]; builder.Append(GetCSVFormatLine(line)); } File.WriteAllText(filePath, builder.ToString(), encoding); } //打印 public static void Debug(List<List<string>> result) { for (int i = 0; i < result.Count; i++) { List<string> line = result[i]; for (int j = 0; j < line.Count; j++) { UnityEngine.Debug.LogWarning(line[j]); } } } }
讀取csv的數據
List<List<string>> lists; lists = CSVTool.Read(Application.streamingAssetsPath + "/TypeKeys.csv", Encoding.Default); // 行 列 Debug.Log(lists[0][0]); //Debug.Log(lists[0][1]); Debug.Log(lists[1][0]); Debug.Log(lists.Count);
另外
關於路徑有4個類型:
Application.dataPath:該路徑指向我們Unity編輯器的Asset文件夾
Application.persistentDataPath:該路徑指向iOS和Android的沙盒路徑
Application.streamingAssetsPath:streamingAsset文件夾路徑,在任何平台都可以通過這個路徑讀取到文件夾里的內容
Application.temporaryCachePath:臨時數據文件路徑