public bool Replace(Stream readStream, Stream writeStream, string searchPattern, string replacePattern, SearchType searchType,
GrepSearchOption searchOptions, Encoding encoding, IEnumerable <GrepMatch> replaceItems)
{
SearchDelegates.DoReplace replaceMethod = DoTextReplace;
switch (searchType)
{
case SearchType.PlainText:
replaceMethod = DoTextReplace;
break;
case SearchType.Regex:
replaceMethod = DoRegexReplace;
break;
case SearchType.XPath:
replaceMethod = DoXPathReplace;
break;
case SearchType.Soundex:
replaceMethod = DoFuzzyReplace;
break;
}
if (searchOptions.HasFlag(GrepSearchOption.Multiline) || searchType == SearchType.XPath)
{
return(ReplaceMultiline(readStream, writeStream, searchPattern, replacePattern, searchOptions, replaceMethod, encoding, replaceItems));
}
else
{
return(Replace(readStream, writeStream, searchPattern, replacePattern, searchOptions, replaceMethod, encoding, replaceItems));
}
}
private bool ReplaceMultiline(Stream inputStream, Stream outputStream, string searchPattern, string replacePattern, GrepSearchOption searchOptions,
SearchDelegates.DoReplace replaceMethod, Encoding encoding, IEnumerable <GrepMatch> replaceItems)
{
using (StreamReader readStream = new StreamReader(inputStream, encoding))
{
StreamWriter writeStream = new StreamWriter(outputStream, encoding);
string fileBody = readStream.ReadToEnd();
fileBody = replaceMethod(-1, 0, fileBody, searchPattern, replacePattern, searchOptions, replaceItems);
writeStream.Write(fileBody);
writeStream.Flush();
}
return(true);
}
private bool Replace(Stream inputStream, Stream outputStream, string searchPattern, string replacePattern, GrepSearchOption searchOptions,
SearchDelegates.DoReplace replaceMethod, Encoding encoding, IEnumerable <GrepMatch> replaceItems)
{
using (StreamReader readStream = new StreamReader(inputStream, encoding))
{
bool hasUtf8bom = encoding == Encoding.UTF8 && Utils.HasUtf8ByteOrderMark(inputStream);
var outputEncoding = encoding;
if (hasUtf8bom)
{
outputEncoding = new UTF8Encoding(true);
}
StreamWriter writeStream = new StreamWriter(outputStream, outputEncoding);
string line = null;
int lineNumber = 1;
int filePosition = 0;
// read with eol character(s);
using (EolReader eolReader = new EolReader(readStream))
{
while (!eolReader.EndOfStream)
{
line = eolReader.ReadLine();
if (lineNumber == 1 && hasUtf8bom)
{
line = line.Replace("\ufeff", ""); // remove BOM
}
int lineLength = line.Length;
line = replaceMethod(lineNumber, filePosition, line, searchPattern, replacePattern, searchOptions, replaceItems);
writeStream.Write(line); // keep original eol
lineNumber++;
filePosition += lineLength;
}
}
writeStream.Flush();
}
return(true);
}
public bool Replace(Stream readStream, Stream writeStream, string searchPattern, string replacePattern, SearchType searchType, GrepSearchOption searchOptions, Encoding encoding)
{
SearchDelegates.DoReplace replaceMethod = doTextReplaceCaseSensitive;
switch (searchType)
{
case SearchType.PlainText:
if ((searchOptions & GrepSearchOption.CaseSensitive) == GrepSearchOption.CaseSensitive)
{
replaceMethod = doTextReplaceCaseSensitive;
}
else
{
replaceMethod = doTextReplaceCaseInsensitive;
}
break;
case SearchType.Regex:
replaceMethod = doRegexReplace;
break;
case SearchType.XPath:
replaceMethod = doXPathReplace;
break;
case SearchType.Soundex:
replaceMethod = doFuzzyReplace;
break;
}
if ((searchOptions & GrepSearchOption.Multiline) == GrepSearchOption.Multiline)
{
return(replaceMultiline(readStream, writeStream, searchPattern, replacePattern, searchOptions, replaceMethod, encoding));
}
else
{
return(replace(readStream, writeStream, searchPattern, replacePattern, searchOptions, replaceMethod, encoding));
}
}
private bool replace(Stream inputStream, Stream outputStream, string searchPattern, string replacePattern, GrepSearchOption searchOptions, SearchDelegates.DoReplace replaceMethod, Encoding encoding)
{
using (StreamReader readStream = new StreamReader(inputStream, encoding))
{
StreamWriter writeStream = new StreamWriter(outputStream, encoding);
string line = null;
int counter = 1;
while ((line = readStream.ReadLine()) != null)
{
line = replaceMethod(line, searchPattern, replacePattern, searchOptions);
writeStream.WriteLine(line);
counter++;
}
writeStream.Flush();
}
return(true);
}
private bool replace(Stream inputStream, Stream outputStream, string searchPattern, string replacePattern, GrepSearchOption searchOptions, SearchDelegates.DoReplace replaceMethod, Encoding encoding)
{
using (StreamReader readStream = new StreamReader(inputStream, encoding))
{
StreamWriter writeStream = new StreamWriter(outputStream, encoding);
string line = null;
int counter = 1;
// use first line to determine eol character(s);
line = readStream.ReadLine(true);
if (line != null)
{
if (line.EndsWith("\r\n"))
{
writeStream.NewLine = "\r\n";
line = line.Substring(0, line.Length - 2);
}
else if (line.EndsWith("\n"))
{
writeStream.NewLine = "\n";
line = line.Substring(0, line.Length - 1);
}
else if (line.EndsWith("\r"))
{
writeStream.NewLine = "\r";
line = line.Substring(0, line.Length - 1);
}
line = replaceMethod(line, searchPattern, replacePattern, searchOptions);
writeStream.WriteLine(line);
counter++;
}
while ((line = readStream.ReadLine()) != null)
{
line = replaceMethod(line, searchPattern, replacePattern, searchOptions);
writeStream.WriteLine(line);
counter++;
}
writeStream.Flush();
}
return(true);
}
private bool replace(Stream inputStream, Stream outputStream, string searchPattern, string replacePattern, GrepSearchOption searchOptions, SearchDelegates.DoReplace replaceMethod, Encoding encoding)
{
using (StreamReader readStream = new StreamReader(inputStream, encoding))
{
StreamWriter writeStream = new StreamWriter(outputStream, encoding);
string line = null;
int counter = 1;
// use first line to determine eol character(s);
using (EolReader eolReader = new EolReader(readStream))
{
line = eolReader.ReadLine();
if (line != null)
{
if (line.EndsWith("\r\n"))
{
writeStream.NewLine = "\r\n";
}
else if (line.EndsWith("\n"))
{
writeStream.NewLine = "\n";
}
else if (line.EndsWith("\r"))
{
writeStream.NewLine = "\r";
}
}
}
readStream.BaseStream.Seek(0, SeekOrigin.Begin);
while (!readStream.EndOfStream)
{
line = readStream.ReadLine();
line = replaceMethod(line, searchPattern, replacePattern, searchOptions);
writeStream.WriteLine(line);
counter++;
}
writeStream.Flush();
}
return(true);
}
