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    UNITY3D读写CVS格式文件录制与存储数据手套数据

    2019/11/12      点击:
    说明:

    1.写入一个单元格时,如果含有逗号,则需要将整个字段用双引号括起来;如果里面还有双引号就替换成两个双引号。

    2.写入一行时,末尾要加上\r\n作为行分隔符。

    3.读取时,也要根据上面的写入规则进行解析。

    直接看代码:

    using System;
    using System.Collections.Generic;
    using System.IO;
    using System.Text;
    
    public class CSVTool {
    
        private static char _csvSeparator = ',';
        private static bool _trimColumns = false;
    
        //获取一个单元格的写入格式
        public static string GetCSVFormat(string str)
        {
            string tempStr = str;
            if (str.Contains(","))
            {
                if (str.Contains("\""))
                {
                    tempStr = str.Replace("\"", "\"\"");
                }
                tempStr = "\"" + tempStr + "\"";
            }
            return tempStr;
        }
    
        //获取一行的写入格式
        public static string GetCSVFormatLine(ListstrList)
        {
            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 ListParseLine(string line)
        {
            StringBuilder _columnBuilder = new StringBuilder();
            ListFields = new List();
            bool inColumn = false;  //是否是在一个列元素里
            bool inQuotes = false;  //是否需要转义
            bool isNotEnd = false;  //读取完毕未结束转义
            _columnBuilder.Remove(0, _columnBuilder.Length);
            //空行也是一个空元素,一个逗号是2个空元素
            if (line == "")
            {
                Fields.Add("");
            }
            // Iterate through every character in the line
            for (int i = 0; i < line.Length; i++)
            {
                char character = line[i];
                // If we are not currently inside a column
                if (!inColumn)
                {
                    // If the current character is a double quote then the column value is contained within
                    // double quotes, otherwise append the next character
                    inColumn = true;
                    if (character == '"')
                    {
                        inQuotes = true;
                        continue;
                    }
                }
                // If we are in between double quotes
                if (inQuotes)
                {
                    if ((i + 1) == line.Length)//这个字符已经结束了整行
                    {
                        if (character == '"') //正常转义结束,且该行已经结束
                        {
                            inQuotes = false;
                            continue;     //当前字符不用添加,跳出后直结束后会添加该元素
                        }
                        else //异常结束,转义未收尾
                        {
                            isNotEnd = true;
                        }
                    }
                    else if (character == '"' && line[i + 1] == _csvSeparator) //结束转义,且后面有可能还有数据
                    {
                        inQuotes = false;
                        inColumn = false;
                        i++; //跳过下一个字符
                    }
                    else if (character == '"' && line[i + 1] == '"') //双引号转义
                    {
                        i++; //跳过下一个字符
                    }
                    else if (character == '"') //双引号单独出现(这种情况实际上已经是格式错误,为了兼容可暂时不处理)
                    {
                        throw new Exception("格式错误,错误的双引号转义");
                    }
                    //其他情况直接跳出,后面正常添加
                }
                else if (character == _csvSeparator)
                    inColumn = false;
                // If we are no longer in the column clear the builder and add the columns to the list
                if (!inColumn) //结束该元素时inColumn置为false,并且不处理当前字符,直接进行Add
                {
                    Fields.Add(_trimColumns ? _columnBuilder.ToString().Trim() : _columnBuilder.ToString());
                    _columnBuilder.Remove(0, _columnBuilder.Length);
                }
                else // append the current column
                    _columnBuilder.Append(character);
            }
            //(标准格式一行结尾不需要逗号结尾,而上面for是遇到逗号才添加的,为了兼容还要添加一次)
            if (inColumn)
            {
                if (isNotEnd)
                {
                    _columnBuilder.Append("\r\n");
                }
                Fields.Add(_trimColumns ? _columnBuilder.ToString().Trim() : _columnBuilder.ToString());
            }
            else  //如果inColumn为false,说明已经添加,一个字符为分隔符,所以后面要加上一个空元素
            {
                Fields.Add("");
            }
            return Fields;
        }
        //读取文件
        public static ListRead(string filePath, Encoding encoding)
        {
            Listresult = new List();
            string content = File.ReadAllText(filePath, encoding);
            string[] lines = content.Split(new string[] { "\r\n" }, StringSplitOptions.RemoveEmptyEntries);
            for (int i = 0; i < lines.Length; i++)
            {
                Listline = ParseLine(lines[i]);
                result.Add(line);
            }
            return result;
        }
        //写入文件
        public static void Write(string filePath, Encoding encoding, Listresult)
        {
            StringBuilder builder = new StringBuilder();
            for (int i = 0; i < result.Count; i++)
            {
                Listline = result[i];
                builder.Append(GetCSVFormatLine(line));
            }
            File.WriteAllText(filePath, builder.ToString(), encoding);
        }
    
        //打印
        public static void Debug(Listresult)
        {
            for (int i = 0; i < result.Count; i++)
            {
                Listline = result[i];
                for (int j = 0; j < line.Count; j++)
                {
                    UnityEngine.Debug.LogWarning(line[j]);
                }
            }
        }
    }

    关于UNITY的路径有4个类型:

    Application.dataPath:该路径指向我们Unity编辑器的Asset文件夹

    Application.persistentDataPath:该路径指向iOS和Android的沙盒路径

    Application.streamingAssetsPath:streamingAsset文件夹路径,在任何平台都可以通过这个路径读取到文件夹里的内容

    Application.temporaryCachePath:临时数据文件路径