これは非常に古いスレッドです。ただし、同様の問題に遭遇しました。内部に多数の異なるレコード「フォーマット」を持つフラット ファイル。特定の順序ではなく、さまざまな形式があります。つまり、1 行に 57 フィールド、次の 1000 に 59、次の 10000 に 56、57 に戻るということです。
より良いアイデアがないため、各行のコンマの数に基づいてそのファイルを分割し、各タイプの SSIS パッケージを使用して、さまざまなレコード タイプ (現在はまとめられている) をインポートすることにしました。
したがって、この質問に対する答えはそこにあり、ファイルを生成するためのコードがもう少しあります。
これが同じ問題を抱えている人に役立つことを願っています。
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
namespace OddFlatFile_Transformation
{
class RedistributeLines
{
/*
* This routine opens a text file and reads it line by line
* for each line the number of "," (commas) is counted
* and then the line is written into a another text file
* based on that number of commas found
* For example if there are 15 commas in a given line
* the line is written to the WhateverFileName_15.Ext
* WhaeverFileName and Ext are the same file name and
* extension from the original file that is being read
* The application tests WhateverFileName_NN.Ext for existance
* and creates the file in case it does not exist yet
* To Better control splited records a sequential identifier,
* based on the number of lines read, is added to the beginning
* of each line written independently of the file and record number
*/
static void Main(string[] args)
{
// get full qualified file name from console
String strFileToRead;
strFileToRead = Console.ReadLine();
// create reader & open file
StreamReader srTextFileReader = new StreamReader(strFileToRead);
string strLineRead = "";
string strFileToWrite = "";
string strLineIdentifier = "";
string strLineToWrite = "";
int intCountLines = 0;
int intCountCommas = 0;
int intDotPosition = 0;
const string strZeroPadding = "00000000";
// Processing begins
Console.WriteLine("Processing begins: " + DateTime.Now);
/* Main Loop */
while (strLineRead != null)
{
// read a line of text count commas and create Linde Identifier
strLineRead = srTextFileReader.ReadLine();
if (strLineRead != null)
{
intCountLines += 1;
strLineIdentifier = strZeroPadding.Substring(0, strZeroPadding.Length - intCountLines.ToString().Length) + intCountLines;
intCountCommas = 0;
foreach (char chrEachPosition in strLineRead)
{
if (chrEachPosition == ',') intCountCommas++;
}
// Based on the number of commas determined above
// the name of the file to be writen to is established
intDotPosition = strFileToRead.IndexOf(".");
strFileToWrite = strFileToRead.Substring (0,intDotPosition) + "_";
if ( intCountCommas < 10)
{
strFileToWrite += "0" + intCountCommas;
}
else
{
strFileToWrite += intCountCommas;
}
strFileToWrite += strFileToRead.Substring(intDotPosition, (strFileToRead.Length - intDotPosition));
// Using the file name established above the line captured
// during the text read phase is written to that file
StreamWriter swTextFileWriter = new StreamWriter(strFileToWrite, true);
strLineToWrite = "[" + strLineIdentifier + "] " + strLineRead;
swTextFileWriter.WriteLine (strLineToWrite);
swTextFileWriter.Close();
Console.WriteLine(strLineIdentifier);
}
}
// close the stream
srTextFileReader.Close();
Console.WriteLine(DateTime.Now);
Console.ReadLine();
}
}
}