You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
282 lines
5.4 KiB
C#
282 lines
5.4 KiB
C#
2 months ago
|
using System;
|
||
|
using System.Collections.Generic;
|
||
|
using System.IO;
|
||
|
|
||
|
namespace DldUtil
|
||
|
{
|
||
|
|
||
|
public static class BigFileReader
|
||
|
{
|
||
|
public static bool FileHasText(string path, params string[] seekText)
|
||
|
{
|
||
|
if (!File.Exists(path))
|
||
|
{
|
||
|
return false;
|
||
|
}
|
||
|
FileStream fs = File.Open(path, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
|
||
|
BufferedStream bs = new BufferedStream(fs);
|
||
|
StreamReader sr = new StreamReader(bs);
|
||
|
|
||
|
while (true)
|
||
|
{
|
||
|
var line = sr.ReadLine();
|
||
|
|
||
|
if (line == null)
|
||
|
{
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
for (var seekTextIdx = 0; seekTextIdx < seekText.Length; ++seekTextIdx)
|
||
|
{
|
||
|
if (line.IndexOf(seekText[seekTextIdx], StringComparison.Ordinal) >= 0)
|
||
|
{
|
||
|
sr.Close();
|
||
|
bs.Close();
|
||
|
fs.Close();
|
||
|
|
||
|
return true;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
sr.Close();
|
||
|
bs.Close();
|
||
|
fs.Close();
|
||
|
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
public static string SeekText(string path, params string[] seekText)
|
||
|
{
|
||
|
FileStream fs = File.Open(path, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
|
||
|
BufferedStream bs = new BufferedStream(fs);
|
||
|
StreamReader sr = new StreamReader(bs);
|
||
|
|
||
|
//long currentLine = 0;
|
||
|
while (true)
|
||
|
{
|
||
|
//++currentLine;
|
||
|
var line = sr.ReadLine();
|
||
|
//Debug.LogFormat("seeking... line number {0}: {1}", currentLine, line);
|
||
|
|
||
|
// reached end of file?
|
||
|
if (line == null)
|
||
|
{
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
for (var seekTextIdx = 0; seekTextIdx < seekText.Length; ++seekTextIdx)
|
||
|
{
|
||
|
if (line.IndexOf(seekText[seekTextIdx], StringComparison.Ordinal) >= 0)
|
||
|
{
|
||
|
return line;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
return string.Empty;
|
||
|
}
|
||
|
|
||
|
public struct FoundText
|
||
|
{
|
||
|
public long LineNumber;
|
||
|
public string Text;
|
||
|
}
|
||
|
|
||
|
public static List<FoundText> SeekAllText(string path, params string[] seekText)
|
||
|
{
|
||
|
FileStream fs = File.Open(path, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
|
||
|
BufferedStream bs = new BufferedStream(fs);
|
||
|
StreamReader sr = new StreamReader(bs);
|
||
|
|
||
|
List<FoundText> returnValue = new List<FoundText>();
|
||
|
|
||
|
long currentLine = 0;
|
||
|
while (true)
|
||
|
{
|
||
|
++currentLine;
|
||
|
var line = sr.ReadLine();
|
||
|
//Debug.LogFormat("seeking... line number {0}: {1}", currentLine, line);
|
||
|
|
||
|
// reached end of file?
|
||
|
if (line == null)
|
||
|
{
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
for (var seekTextIdx = 0; seekTextIdx < seekText.Length; ++seekTextIdx)
|
||
|
{
|
||
|
if (line.IndexOf(seekText[seekTextIdx], StringComparison.Ordinal) >= 0)
|
||
|
{
|
||
|
FoundText newFoundText;
|
||
|
newFoundText.LineNumber = currentLine;
|
||
|
newFoundText.Text = line;
|
||
|
returnValue.Add(newFoundText);
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
return returnValue;
|
||
|
}
|
||
|
|
||
|
public static IEnumerable<string> ReadFile(string path, params string[] seekText)
|
||
|
{
|
||
|
return ReadFile(path, true, seekText);
|
||
|
}
|
||
|
|
||
|
public static IEnumerable<string> ReadFile(string path, bool startAfterSeekedText, params string[] seekText)
|
||
|
{
|
||
|
var fs = File.Open(path, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
|
||
|
var bs = new BufferedStream(fs);
|
||
|
var sr = new StreamReader(bs);
|
||
|
|
||
|
string line;
|
||
|
|
||
|
bool seekTextRequested = (seekText != null) && (seekText.Length > 0) && !string.IsNullOrEmpty(seekText[0]);
|
||
|
|
||
|
|
||
|
long seekTextFoundAtLine = -1;
|
||
|
|
||
|
|
||
|
if (seekTextRequested)
|
||
|
{
|
||
|
long currentLine = 0;
|
||
|
while (true)
|
||
|
{
|
||
|
++currentLine;
|
||
|
line = sr.ReadLine();
|
||
|
//Debug.LogFormat("seeking... line number {0}: {1}", currentLine, line);
|
||
|
|
||
|
// reached end of file?
|
||
|
if (line == null)
|
||
|
{
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
var atLeastOneSeekTextFound = false;
|
||
|
for (var seekTextIdx = 0; seekTextIdx < seekText.Length; ++seekTextIdx)
|
||
|
{
|
||
|
if (line.IndexOf(seekText[seekTextIdx], StringComparison.Ordinal) >= 0)
|
||
|
{
|
||
|
atLeastOneSeekTextFound = true;
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
// if seekText not found yet, continue search
|
||
|
if (!atLeastOneSeekTextFound)
|
||
|
{
|
||
|
continue;
|
||
|
}
|
||
|
|
||
|
seekTextFoundAtLine = currentLine;
|
||
|
|
||
|
//Debug.Log("seeking: " + line);
|
||
|
//Debug.LogFormat("seekText found at line number {0}: {1}", currentLine, line);
|
||
|
}
|
||
|
//Debug.Log("done seeking");
|
||
|
|
||
|
if (seekTextFoundAtLine != -1)
|
||
|
{
|
||
|
fs.Seek(0, SeekOrigin.Begin);
|
||
|
|
||
|
currentLine = 0;
|
||
|
while (true)
|
||
|
{
|
||
|
++currentLine;
|
||
|
line = sr.ReadLine();
|
||
|
|
||
|
if (line == null)
|
||
|
{
|
||
|
break;
|
||
|
}
|
||
|
if (startAfterSeekedText && currentLine <= seekTextFoundAtLine)
|
||
|
{
|
||
|
continue;
|
||
|
}
|
||
|
if (!startAfterSeekedText && currentLine < seekTextFoundAtLine)
|
||
|
{
|
||
|
continue;
|
||
|
}
|
||
|
|
||
|
//Debug.Log("seeked: " + line);
|
||
|
|
||
|
yield return line;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
while (true)
|
||
|
{
|
||
|
line = sr.ReadLine();
|
||
|
|
||
|
if (line == null)
|
||
|
{
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
yield return line;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
sr.Close();
|
||
|
bs.Close();
|
||
|
fs.Close();
|
||
|
}
|
||
|
|
||
|
|
||
|
public static IEnumerable<string> ReadFile(string path)
|
||
|
{
|
||
|
var fs = File.Open(path, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
|
||
|
var bs = new BufferedStream(fs);
|
||
|
var sr = new StreamReader(bs);
|
||
|
|
||
|
while (true)
|
||
|
{
|
||
|
var line = sr.ReadLine();
|
||
|
|
||
|
if (line == null)
|
||
|
{
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
yield return line;
|
||
|
}
|
||
|
|
||
|
sr.Close();
|
||
|
bs.Close();
|
||
|
fs.Close();
|
||
|
}
|
||
|
|
||
|
public static IEnumerable<FoundText> ReadFileWithLine(string path)
|
||
|
{
|
||
|
var fs = File.Open(path, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
|
||
|
var bs = new BufferedStream(fs);
|
||
|
var sr = new StreamReader(bs);
|
||
|
|
||
|
long currentLineNumber = 0;
|
||
|
while (true)
|
||
|
{
|
||
|
++currentLineNumber;
|
||
|
var line = sr.ReadLine();
|
||
|
|
||
|
if (line == null)
|
||
|
{
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
FoundText text;
|
||
|
text.Text = line;
|
||
|
text.LineNumber = currentLineNumber;
|
||
|
yield return text;
|
||
|
}
|
||
|
|
||
|
sr.Close();
|
||
|
bs.Close();
|
||
|
fs.Close();
|
||
|
}
|
||
|
}
|
||
|
|
||
|
}
|