Init

2023-12-28 15:18:03 +08:00
commit 6b88f5bd40
20 changed files with 1544 additions and 0 deletions
--- a/ConsoleApp2/Helpers/DumpDataHelper.cs
+++ b/ConsoleApp2/Helpers/DumpDataHelper.cs
@@ -0,0 +1,91 @@
+using System.Text.RegularExpressions;
+
+namespace ConsoleApp2.Helpers;
+
+public static partial class DumpDataHelper
+{
+    [GeneratedRegex(@"'.+\.dat'")]
+    private static partial Regex MatchDatFile();
+    [GeneratedRegex(@"\([^)]*\)")]
+    private static partial Regex MatchBrackets();
+    
+    
+    public static async Task<string[]> GetCsvHeadersFromSqlFileAsync(string filePath)
+    {
+        var txt = await File.ReadAllTextAsync(filePath);
+        var match = MatchBrackets().Match(txt);
+
+        return ParseHeader(match.ValueSpan);
+    }
+
+    private static string[] ParseHeader(ReadOnlySpan<char> headerStr)
+    {
+        headerStr = headerStr[1..^1];
+        Span<Range> ranges = stackalloc Range[50];
+        var count = headerStr.Split(ranges, ',');
+        var arr = new string[count];
+
+        for (var i = 0; i < count; i++)
+        {
+            arr[i] = headerStr[ranges[i]].Trim("@`").ToString(); // 消除列名的反引号，如果是变量则消除@
+        }
+
+        return arr;
+    }
+    
+    
+    public static string GetTableName(ReadOnlySpan<char> filePath)
+    {
+        filePath = filePath[(filePath.LastIndexOf('\\') + 1)..];
+        var firstDotIdx = -1;
+        var secondDotIdx = -1;
+        var times = 0;
+        for (var i = 0; i < filePath.Length; i++)
+        {
+            if (filePath[i] == '.')
+            {
+                ++times;
+                if(times == 1)
+                    firstDotIdx = i;
+                if (times == 2)
+                {
+                    secondDotIdx = i;
+                    break;
+                }
+            }
+        }
+
+        return filePath[(firstDotIdx+1)..secondDotIdx].ToString();
+    }
+
+    public static async Task<string[]> GetCsvFileNamesFromSqlFileAsync(string filePath)
+    {
+        var txt = await File.ReadAllTextAsync(filePath);
+        var matches = MatchDatFile().Matches(txt);
+        return matches.Select(match => match.ValueSpan[1..^1].ToString()).ToArray();
+    }
+    
+    public static bool CheckHexField(string? str)
+    {
+        if (string.IsNullOrWhiteSpace(str))
+            return false;
+        
+        if (str.StartsWith('\"'))
+            return false;
+
+        var isDigit = true;
+
+        foreach (var c in str)
+        {
+            if (!char.IsAsciiHexDigit(c))
+                return false;
+            if (!char.IsNumber(c))
+                isDigit = false;
+        }
+
+        if (isDigit)
+            return false;
+
+        return true;
+    }
+}