How can I convert this vfp code to c#
Function PlainToHex(inputString)
Local myString
myString = ""
Do While Len(inputString) > 0
myString = myString + Right(Transform(Asc(inputString), "#0"), 2)
inputString = SubStr(inputString, 2)
EndDo
Return myString
EndFunc
I have tried looking up msdn but there are not enough examples for these vfp functions.
You could try something like this:
void Main()
{
string test = "This is a string";
string result = PlainToHex(test);
Console.WriteLine(result);
}
public string PlainToHex(string inputString)
{
return string.Join("", inputString.Select(c => ((int)c).ToString("X2")).ToArray());
}
This also should work:
public string PlainToHex(string input)
{
return BitConverter.ToString(Encoding.Default.GetBytes(input)).Replace("-", "");
}
I hava a specific string that I want to replace
string gerneralRootPath = docTab.Rows[0]["URL"].ToString();
string documentName = docTab.Rows[0]["NAME"].ToString();
var connectNamesAndURL = new StringBuilder(gerneralRootPath);
connectNamesAndURL.Remove(30,20);
connectNamesAndURL.Insert(30, documentName);
gerneralRootPath = connectNamesAndURL.ToString();
The output of gerneralRootPath is
"Documents/Z_Documentation/PDF/sales.2010+Implementation+Revised+Feb10.pdf"
The output of is documentName is
"doc123"
My gole is to remove everything after /PDF/.. so that final string looks like this
Documents/Z_Documentation/PDF/doc123
So how can I remove everything after the /PDF/..
Try this
string gerneralRootPath = "Documents/Z_Documentation/PDF/sales.2010+Implementation+Revised+Feb10.pdf";
gerneralRootPath = gerneralRootPath.Remove(gerneralRootPath.IndexOf("PDF") + 3);
gerneralRootPath = gerneralRootPath +"/"+documentName ;
You can achieve this using String.Split() function:
string input = "Documents/Z_Documentation/PDF/sales.2010+Implementation+Revised+Feb10.pdf";
string output = input.Split(new string[] { "/PDF/" }, StringSplitOptions.None).First() + "/PDF/doc123";
using System.IO;
string result = gerneralRootPath.Replace(Path.GetFileName(gerneralRootPath), documentName);
With Path.GetFileName (from System.IO) you get your filename:
sales.2010+Implementation+Revised+Feb10.pdf
The result is:
Documents/Z_Documentation/PDF/doc123
please find the sample code
int i = gerneralRootPath.IndexOf("/PDF/");
if (i >= 0) gerneralRootPath = gerneralRootPath.Substring(0,i+5);
i hope this will help you....
This is an example:
class Program
{
static string RemoveAfterPDF(string gerneralRootPath)
{
string pdf = "PDF";
int index = gerneralRootPath.IndexOf(pdf);
return gerneralRootPath.Substring(0, index + pdf.Length);
}
public static void Main()
{
string test = RemoveAfterPDF("Documents/Z_Documentation/PDF/sales.2010+Implementation+Revised+Feb10.pdf");
}
}
Edit
This is better and much more reusable example:
class Program
{
static string RemoveAfter(string gerneralRootPath, string removeAfter)
{
string result = string.Empty;
int index = gerneralRootPath.IndexOf(removeAfter);
if (index > 0)
result = gerneralRootPath.Substring(0, index + removeAfter.Length);
return result;
}
public static void Main()
{
string test = RemoveAfterPDF("Documents/Z_Documentation/PDF/sales.2010+Implementation+Revised+Feb10.pdf", "PDF");
}
}
How to get the first directory name in a relative path, given that they can be different accepted directory separators?
For example:
foo\bar\abc.txt -> foo
bar/foo/foobar -> bar
Works with both forward and back slash
static string GetRootFolder(string path)
{
while (true)
{
string temp = Path.GetDirectoryName(path);
if (String.IsNullOrEmpty(temp))
break;
path = temp;
}
return path;
}
Seems like you could just use the string.Split() method on the string, then grab the first element.
example (untested):
string str = "foo\bar\abc.txt";
string str2 = "bar/foo/foobar";
string[] items = str.split(new char[] {'/', '\'}, StringSplitOptions.RemoveEmptyEntries);
Console.WriteLine(items[0]); // prints "foo"
items = str2.split(new char[] {'/', '\'}, StringSplitOptions.RemoveEmptyEntries);
Console.WriteLine(items[0]); // prints "bar"
The most robust solution would be to use DirectoryInfo and FileInfo. On a Windows NT-based system it should accept either forward or backslashes for separators.
using System;
using System.IO;
internal class Program
{
private static void Main(string[] args)
{
Console.WriteLine(GetTopRelativeFolderName(#"foo\bar\abc.txt")); // prints 'foo'
Console.WriteLine(GetTopRelativeFolderName("bar/foo/foobar")); // prints 'bar'
Console.WriteLine(GetTopRelativeFolderName("C:/full/rooted/path")); // ** throws
}
private static string GetTopRelativeFolderName(string relativePath)
{
if (Path.IsPathRooted(relativePath))
{
throw new ArgumentException("Path is not relative.", "relativePath");
}
FileInfo fileInfo = new FileInfo(relativePath);
DirectoryInfo workingDirectoryInfo = new DirectoryInfo(".");
string topRelativeFolderName = string.Empty;
DirectoryInfo current = fileInfo.Directory;
bool found = false;
while (!found)
{
if (current.FullName == workingDirectoryInfo.FullName)
{
found = true;
}
else
{
topRelativeFolderName = current.Name;
current = current.Parent;
}
}
return topRelativeFolderName;
}
}
Based on the answer provided by Hasan Khan ...
private static string GetRootFolder(string path)
{
var root = Path.GetPathRoot(path);
while (true)
{
var temp = Path.GetDirectoryName(path);
if (temp != null && temp.Equals(root))
break;
path = temp;
}
return path;
}
This will give the the top level folder
Based on the question you ask, the following should work:
public string GetTopLevelDir(string filePath)
{
string temp = Path.GetDirectoryName(filePath);
if(temp.Contains("\\"))
{
temp = temp.Substring(0, temp.IndexOf("\\"));
}
else if (temp.Contains("//"))
{
temp = temp.Substring(0, temp.IndexOf("\\"));
}
return temp;
}
When passed foo\bar\abc.txt it will foo as wanted- same for the / case
Here is another example in case your path if following format:
string path = "c:\foo\bar\abc.txt"; // or c:/foo/bar/abc.txt
string root = Path.GetPathRoot(path); // root == c:\
This should work fine
string str = "foo\bar\abc.txt";
string str2 = "bar/foo/foobar";
str.Replace("/", "\\").Split('\\').First(); // foo
str2.Replace("/", "\\").Split('\\').First(); // bar
Here my example, with no memory footprint (without creating new strings in memory):
var slashIndex = relativePath.IndexOf('/');
var backslashIndex = relativePath.IndexOf('\\');
var firstSlashIndex = (slashIndex > 0) ? (slashIndex < backslashIndex ? slashIndex : (backslashIndex == -1) ? slashIndex : backslashIndex) : backslashIndex;
var rootDirectory = relativePath.Substring(0, firstSlashIndex);
C# or VB.NET suggestion are welcome.
I have the following code:
Dim someText = "Stack Over Flow Community"
Dim someWord = "Over Community"
If someText.Contains(someWord) Then
Response.Write("Word found.")
Else
Response.Write("No word found.")
End If
Function Contains looks only for next words from left to right.
someText.Contains("Over Stack") returns False
someText.Contains("Stack Community") returns False
I want all of these to return True as long as there are words that exist in the string.
Is there any existing function that cover any case regardless of words position in the string?
words.Split(' ').Any(someText.Contains)
someText.Split(' ').Intersect(someWord.Split(' ')).Any();
public static class StringExtension
{
public static bool ContainsWord(this string source, string contain)
{
List<string> sourceList = source.Split(' ').ToList();
List<string> containList = contain.Split(' ').ToList();
return sourceList.Intersect(containList).Any();
}
}
string someText = "Stack Over Flow Community";
var res = someText.ContainsWord("Over Stack"); // return true
var res1 = someText.ContainsWord("Stack Community"); // return true
var res2 = someText.ContainsWord("Stack1 Community"); // return false
An alternative to the Linq solutions would be an extension method:
public static bool ContainsAllWords(this string input, string search)
{
foreach (string word in search.split(' ', StringSplitOptions.RemoveEmptyEntries))
{
if (!input.Contains(word))
return false;
}
return true;
}
Usage:
string test = "stack overflow";
string searchPhrase = "overflow stack";
Console.WriteLine(test.ContainsAllWords(searchPhrase));
Better for re-usability and makes your code more declarative (imho).
I recently have been moving a bunch of MP3s from various locations into a repository. I had been constructing the new file names using the ID3 tags (thanks, TagLib-Sharp!), and I noticed that I was getting a System.NotSupportedException:
"The given path's format is not supported."
This was generated by either File.Copy() or Directory.CreateDirectory().
It didn't take long to realize that my file names needed to be sanitized. So I did the obvious thing:
public static string SanitizePath_(string path, char replaceChar)
{
string dir = Path.GetDirectoryName(path);
foreach (char c in Path.GetInvalidPathChars())
dir = dir.Replace(c, replaceChar);
string name = Path.GetFileName(path);
foreach (char c in Path.GetInvalidFileNameChars())
name = name.Replace(c, replaceChar);
return dir + name;
}
To my surprise, I continued to get exceptions. It turned out that ':' is not in the set of Path.GetInvalidPathChars(), because it is valid in a path root. I suppose that makes sense - but this has to be a pretty common problem. Does anyone have some short code that sanitizes a path? The most thorough I've come up with this, but it feels like it is probably overkill.
// replaces invalid characters with replaceChar
public static string SanitizePath(string path, char replaceChar)
{
// construct a list of characters that can't show up in filenames.
// need to do this because ":" is not in InvalidPathChars
if (_BadChars == null)
{
_BadChars = new List<char>(Path.GetInvalidFileNameChars());
_BadChars.AddRange(Path.GetInvalidPathChars());
_BadChars = Utility.GetUnique<char>(_BadChars);
}
// remove root
string root = Path.GetPathRoot(path);
path = path.Remove(0, root.Length);
// split on the directory separator character. Need to do this
// because the separator is not valid in a filename.
List<string> parts = new List<string>(path.Split(new char[]{Path.DirectorySeparatorChar}));
// check each part to make sure it is valid.
for (int i = 0; i < parts.Count; i++)
{
string part = parts[i];
foreach (char c in _BadChars)
{
part = part.Replace(c, replaceChar);
}
parts[i] = part;
}
return root + Utility.Join(parts, Path.DirectorySeparatorChar.ToString());
}
Any improvements to make this function faster and less baroque would be much appreciated.
To clean up a file name you could do this
private static string MakeValidFileName( string name )
{
string invalidChars = System.Text.RegularExpressions.Regex.Escape( new string( System.IO.Path.GetInvalidFileNameChars() ) );
string invalidRegStr = string.Format( #"([{0}]*\.+$)|([{0}]+)", invalidChars );
return System.Text.RegularExpressions.Regex.Replace( name, invalidRegStr, "_" );
}
A shorter solution:
var invalids = System.IO.Path.GetInvalidFileNameChars();
var newName = String.Join("_", origFileName.Split(invalids, StringSplitOptions.RemoveEmptyEntries) ).TrimEnd('.');
Based on Andre's excellent answer but taking into account Spud's comment on reserved words, I made this version:
/// <summary>
/// Strip illegal chars and reserved words from a candidate filename (should not include the directory path)
/// </summary>
/// <remarks>
/// http://stackoverflow.com/questions/309485/c-sharp-sanitize-file-name
/// </remarks>
public static string CoerceValidFileName(string filename)
{
var invalidChars = Regex.Escape(new string(Path.GetInvalidFileNameChars()));
var invalidReStr = string.Format(#"[{0}]+", invalidChars);
var reservedWords = new []
{
"CON", "PRN", "AUX", "CLOCK$", "NUL", "COM0", "COM1", "COM2", "COM3", "COM4",
"COM5", "COM6", "COM7", "COM8", "COM9", "LPT0", "LPT1", "LPT2", "LPT3", "LPT4",
"LPT5", "LPT6", "LPT7", "LPT8", "LPT9"
};
var sanitisedNamePart = Regex.Replace(filename, invalidReStr, "_");
foreach (var reservedWord in reservedWords)
{
var reservedWordPattern = string.Format("^{0}\\.", reservedWord);
sanitisedNamePart = Regex.Replace(sanitisedNamePart, reservedWordPattern, "_reservedWord_.", RegexOptions.IgnoreCase);
}
return sanitisedNamePart;
}
And these are my unit tests
[Test]
public void CoerceValidFileName_SimpleValid()
{
var filename = #"thisIsValid.txt";
var result = PathHelper.CoerceValidFileName(filename);
Assert.AreEqual(filename, result);
}
[Test]
public void CoerceValidFileName_SimpleInvalid()
{
var filename = #"thisIsNotValid\3\\_3.txt";
var result = PathHelper.CoerceValidFileName(filename);
Assert.AreEqual("thisIsNotValid_3__3.txt", result);
}
[Test]
public void CoerceValidFileName_InvalidExtension()
{
var filename = #"thisIsNotValid.t\xt";
var result = PathHelper.CoerceValidFileName(filename);
Assert.AreEqual("thisIsNotValid.t_xt", result);
}
[Test]
public void CoerceValidFileName_KeywordInvalid()
{
var filename = "aUx.txt";
var result = PathHelper.CoerceValidFileName(filename);
Assert.AreEqual("_reservedWord_.txt", result);
}
[Test]
public void CoerceValidFileName_KeywordValid()
{
var filename = "auxillary.txt";
var result = PathHelper.CoerceValidFileName(filename);
Assert.AreEqual("auxillary.txt", result);
}
string clean = String.Concat(dirty.Split(Path.GetInvalidFileNameChars()));
there are a lot of working solutions here. just for the sake of completeness, here's an approach that doesn't use regex, but uses LINQ:
var invalids = Path.GetInvalidFileNameChars();
filename = invalids.Aggregate(filename, (current, c) => current.Replace(c, '_'));
Also, it's a very short solution ;)
I'm using the System.IO.Path.GetInvalidFileNameChars() method to check invalid characters and I've got no problems.
I'm using the following code:
foreach( char invalidchar in System.IO.Path.GetInvalidFileNameChars())
{
filename = filename.Replace(invalidchar, '_');
}
I wanted to retain the characters in some way, not just simply replace the character with an underscore.
One way I thought was to replace the characters with similar looking characters which are (in my situation), unlikely to be used as regular characters. So I took the list of invalid characters and found look-a-likes.
The following are functions to encode and decode with the look-a-likes.
This code does not include a complete listing for all System.IO.Path.GetInvalidFileNameChars() characters. So it is up to you to extend or utilize the underscore replacement for any remaining characters.
private static Dictionary<string, string> EncodeMapping()
{
//-- Following characters are invalid for windows file and folder names.
//-- \/:*?"<>|
Dictionary<string, string> dic = new Dictionary<string, string>();
dic.Add(#"\", "Ì"); // U+OOCC
dic.Add("/", "Í"); // U+OOCD
dic.Add(":", "¦"); // U+00A6
dic.Add("*", "¤"); // U+00A4
dic.Add("?", "¿"); // U+00BF
dic.Add(#"""", "ˮ"); // U+02EE
dic.Add("<", "«"); // U+00AB
dic.Add(">", "»"); // U+00BB
dic.Add("|", "│"); // U+2502
return dic;
}
public static string Escape(string name)
{
foreach (KeyValuePair<string, string> replace in EncodeMapping())
{
name = name.Replace(replace.Key, replace.Value);
}
//-- handle dot at the end
if (name.EndsWith(".")) name = name.CropRight(1) + "°";
return name;
}
public static string UnEscape(string name)
{
foreach (KeyValuePair<string, string> replace in EncodeMapping())
{
name = name.Replace(replace.Value, replace.Key);
}
//-- handle dot at the end
if (name.EndsWith("°")) name = name.CropRight(1) + ".";
return name;
}
You can select your own look-a-likes. I used the Character Map app in windows to select mine %windir%\system32\charmap.exe
As I make adjustments through discovery, I will update this code.
I think the problem is that you first call Path.GetDirectoryName on the bad string. If this has non-filename characters in it, .Net can't tell which parts of the string are directories and throws. You have to do string comparisons.
Assuming it's only the filename that is bad, not the entire path, try this:
public static string SanitizePath(string path, char replaceChar)
{
int filenamePos = path.LastIndexOf(Path.DirectorySeparatorChar) + 1;
var sb = new System.Text.StringBuilder();
sb.Append(path.Substring(0, filenamePos));
for (int i = filenamePos; i < path.Length; i++)
{
char filenameChar = path[i];
foreach (char c in Path.GetInvalidFileNameChars())
if (filenameChar.Equals(c))
{
filenameChar = replaceChar;
break;
}
sb.Append(filenameChar);
}
return sb.ToString();
}
I have had success with this in the past.
Nice, short and static :-)
public static string returnSafeString(string s)
{
foreach (char character in Path.GetInvalidFileNameChars())
{
s = s.Replace(character.ToString(),string.Empty);
}
foreach (char character in Path.GetInvalidPathChars())
{
s = s.Replace(character.ToString(), string.Empty);
}
return (s);
}
Here's an efficient lazy loading extension method based on Andre's code:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace LT
{
public static class Utility
{
static string invalidRegStr;
public static string MakeValidFileName(this string name)
{
if (invalidRegStr == null)
{
var invalidChars = System.Text.RegularExpressions.Regex.Escape(new string(System.IO.Path.GetInvalidFileNameChars()));
invalidRegStr = string.Format(#"([{0}]*\.+$)|([{0}]+)", invalidChars);
}
return System.Text.RegularExpressions.Regex.Replace(name, invalidRegStr, "_");
}
}
}
Your code would be cleaner if you appended the directory and filename together and sanitized that rather than sanitizing them independently. As for sanitizing away the :, just take the 2nd character in the string. If it is equal to "replacechar", replace it with a colon. Since this app is for your own use, such a solution should be perfectly sufficient.
using System;
using System.IO;
using System.Linq;
using System.Text;
public class Program
{
public static void Main()
{
try
{
var badString = "ABC\\DEF/GHI<JKL>MNO:PQR\"STU\tVWX|YZA*BCD?EFG";
Console.WriteLine(badString);
Console.WriteLine(SanitizeFileName(badString, '.'));
Console.WriteLine(SanitizeFileName(badString));
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}
}
private static string SanitizeFileName(string fileName, char? replacement = null)
{
if (fileName == null) { return null; }
if (fileName.Length == 0) { return ""; }
var sb = new StringBuilder();
var badChars = Path.GetInvalidFileNameChars().ToList();
foreach (var #char in fileName)
{
if (badChars.Contains(#char))
{
if (replacement.HasValue)
{
sb.Append(replacement.Value);
}
continue;
}
sb.Append(#char);
}
return sb.ToString();
}
}
Based #fiat's and #Andre's approach, I'd like to share my solution too.
Main difference:
its an extension method
regex is compiled at first use to save some time with a lot executions
reserved words are preserved
public static class StringPathExtensions
{
private static Regex _invalidPathPartsRegex;
static StringPathExtensions()
{
var invalidReg = System.Text.RegularExpressions.Regex.Escape(new string(Path.GetInvalidFileNameChars()));
_invalidPathPartsRegex = new Regex($"(?<reserved>^(CON|PRN|AUX|CLOCK\\$|NUL|COM0|COM1|COM2|COM3|COM4|COM5|COM6|COM7|COM8|COM9|LPT0|LPT1|LPT2|LPT3|LPT4|LPT5|LPT6|LPT7|LPT8|LPT9))|(?<invalid>[{invalidReg}:]+|\\.$)", RegexOptions.Compiled);
}
public static string SanitizeFileName(this string path)
{
return _invalidPathPartsRegex.Replace(path, m =>
{
if (!string.IsNullOrWhiteSpace(m.Groups["reserved"].Value))
return string.Concat("_", m.Groups["reserved"].Value);
return "_";
});
}
}