I am trying to create a program to copy all the files from one directory to another. But I am running in a basic issue. It says indentifier expected when I try to compile on line 52.
public bool RecursiveCopy()
{
string origDir = #"D:\Documents and Settings\Dub\My Documents\HoN Updates\test";
string destDir = #"C:\Games\HoN";
bool status = false;
//get all the info about the original directory
var dirInfo = new DirectoryInfo(origDir);
//retrieve all the _fileNames in the original directory
var files = dirInfo.GetFiles(origDir);
//always use a try...catch to deal
//with any exceptions that may occur
try
{
//loop through all the file names and copy them
foreach (string file in Directory.GetFiles(origDir))
{
var origFile = new FileInfo(file);
var destFile = new FileInfo(file.Replace(origDir, destDir));
//copy the file, use the OverWrite overload to overwrite
//destination file if it exists
System.IO.File.Copy(origFile.FullName, destFile.FullName, true);
//TODO: If you dont want to remove the original
//_fileNames comment this line out
File.Delete(origFile.FullName);
status = true;
}
Console.WriteLine("All files in " + origDir + " copied successfully!");
}
catch (Exception ex)
{
status = false;
//handle any errors that may have occurred
Console.WriteLine(ex.Message);
}
return status;
}
public string origDir = #"D:\Documents and Settings\Dub\My Documents\HoN Updates\test"; // ERROR HERE
public string destDir = #"C:\Games\HoN"; // ERROR HERE
private static void RecursiveCopy(origDir, destDir)
{
Console.WriteLine("done");
Console.ReadLine();
}
You did not give type identifiers to your argument list here
static void RecursiveCopy(origDir, destDir)
should be
static void RecursiveCopy(string origDir, string destDir)
Your method RecursiveCopy has two parameters listed without their types. It should be this:
static void RecursiveCopy(string origDir, string destDir)
Here is your problem:
static void RecursiveCopy(origDir, destDir)
You don't specify the types for the parameters, perhaps you intended the following:
static void RecursiveCopy(string origDir, string destDir)
There are more issues however that I've noticed. It's possible you're still working on these, but from what you've posted:
You never call your RecursiveCopy method. Perhaps you meant to call it from Main() instead of declaring an overload with two parameters?
You declare two public fields origDir and destDir but then never use them. Instead you create two local variables in RecursiveCopy() and use these instead. Did you intend to create parameters or use the public fields instead?
Your copy is not actually true to its name of "recursive".
cYou are missing the parameter types in the RecursiveCopy method declaration. Just Change
static void RecursiveCopy(origDir, destDir)
to
static void RecursiveCopy(String origDir, String destDir)
and all is fine.
Related
I'm trying to build a PostScript to PDF Converter using Ghostscript.Net.
The Args that GetArgs return, are the ones I usually use to call gswin32c.exe and they work fine.
But every time i call Process, i get an error Saying "An error occured when call to 'gsapi_init_with_args' is made: -100". Googling that error didn't bring anything up so I thought I might ask here.
Are there differnet arguments to consider when calling the .dll directly with Ghostscript.net? Or did I made a mistake somewhere else?
Here's my class:
public class PdfConverter
{
#region Private Fields
private List<GhostscriptVersionInfo> _Versions = GhostscriptVersionInfo.GetInstalledVersions(GhostscriptLicense.GPL | GhostscriptLicense.AFPL | GhostscriptLicense.Artifex);
#endregion
#region Private Properties
private GhostscriptVersionInfo Version { get; set; }
#endregion
#region Construction
public PdfConverter()
{
Version = GhostscriptVersionInfo.GetLastInstalledVersion();
}
#endregion
#region Public Members
public bool ConvertToPdf(DirectoryInfo dir)
{
var d = dir;
if(!d.Exists)
return false;
var postScriptFiles = d.GetFiles("*.ps");
var pdfFiles = postScriptFiles.Select(psf => new FileInfo(Path.ChangeExtension(psf.FullName, ".pdf")));
foreach(var file in postScriptFiles) {
//ThreadPool.QueueUserWorkItem(new WaitCallback((o) => {
Process(file, new FileInfo(Path.ChangeExtension(file.FullName, ".pdf")));
//}));
}
pdfFiles.ForEach(pdf => pdf?.Refresh());
return pdfFiles.All(pdf => pdf.Exists);
}
#endregion
#region Private Helpers
private void Process(FileInfo inputFile, FileInfo outputFile)
{
Console.WriteLine($"Converting {inputFile} to {outputFile}");
var proc = new GhostscriptProcessor(Version, true);
proc.Process(GetArgs(inputFile, outputFile).ToArray(), new ConsoleStdIO(true, true, true));
}
private IEnumerable<string> GetArgs(FileInfo inputFile, FileInfo outputFile)
{
return new [] {
$"-q ",
$"-sDEVICE=pdfwrite",
$"-dSAFER",
$"-dNOPAUSE",
$"-dBATCH",
$"-sPAPERSIZE=a4",
$"-dEmbedAllFonts=true",
$"-dAutoRotatePages=/None",
$"-sOutputFile=\"{outputFile.FullName}\"",
$"-dCompatibilityLevel#1.4",
$"-c .setpdfwrite",
$"-f \"{inputFile.FullName}\""
};
}
#endregion
}
Edit:
I forgot to mention: To implement it i had to make my own GhostsdcriptStdIO class. I admit that I'm not entirely sure if I did this right. Although it does get instanciated without exceptions, and override StdOut(...) get's called, and the output is written to the console as expected. override void StdError(...) get's called as well. And also written to the console as expeted.
The Output of the error btw is:
"**** Could not open the file "c:\temp\test.pdf""
"**** Unable to open the initial device, quitting."
Here's my ConsoleStdIO class:
public class ConsoleStdIO : Ghostscript.NET.GhostscriptStdIO
{
#region Construction
public ConsoleStdIO(bool handleStdIn, bool handleStdOut, bool handleStdError) : base(handleStdIn, handleStdOut, handleStdError) { }
#endregion
#region Overrides
public override void StdError(string error)
{
var foo = Encoding.Default.GetBytes(error);
var lenght = foo.Length;
using (var err = Console.OpenStandardError()) {
if(err.CanWrite)
err.Write(foo, 0, lenght);
}
}
public override void StdIn(out string input, int count)
{
byte[] bytes = new byte[0];
using(var stdInput = Console.OpenStandardInput()) {
stdInput.Read(bytes, 0, count);
}
input = Encoding.Default.GetString(bytes);
}
public override void StdOut(string output)
{
var foo = Encoding.Default.GetBytes(output);
var lenght = foo.Length;
using (var err = Console.OpenStandardError()) {
if(err.CanWrite)
err.Write(foo, 0, lenght);
}
}
#endregion
}
Again: doing the same operation with the exact same files and arguments using gswin32c.exe works fine.
Happy Hacking
Error -100 is gs_error_Fatal, which means 'something catastrophic went wrong'. Its an indication that the program failed to start up properly and we can't tell why. The back channel may contain more information.
And indeed, the back channel tells you what's wrong:
**** Could not open the file "c:\temp\test.pdf
**** Unable to open the initial device, quitting.
Ghostscript is unable to open the output file, which means it can't open the pdfwrite device (because that requires an output file) so it aborts the operation.
There could be a number of reasons why Ghostscript can't open the output file. The first thing I'd do is trim down the number of arguments;
You don't want -q (quiet) when you are trying to debug a problem, you want all the information you can get.
I'd remove -dSAFER at least to start with, because that prevents Ghostscript accessing directories outside the current working directory and certain 'special' ones. It may well prevent you accessing the temp directory.
You don't need to set EmbedAllFonts when its the same value as the default.
You could drop the CompatibilityLevel (and note that you've used a # there instead of an =) switch, and the AutoRotatePages while getting this to work.
The "-c .setpdfwrite -f" string has been pointless for years but people still keep using it. All that does these days is slow down the start of processing, ditch it.
Finally you can try changing the backslash ('\') characters to forward slash ('/') in case your string handling is messing that up, or use double backslashes (I'd use the forward slash myself).
You should also check that c:\test\temp.pdf doesn't exist, or if it does exist is not read-only or already open in a different application.
So I solved the problem...
After taking KenS' advice I could run the application without Ghostscript (not Ghostscript.NET) giving me any errors. But it did not produce an actual PDF File.
So KenS's answer did not quite solve the problem, but since 'less is more' and since he took the time to talk to me on IRC to verify that my args in itself were correct, I'll give the answer points nonetheless.
What actually solved my was the following:
Here my original GetArgs(...)
private IEnumerable<string> GetArgs(FileInfo inputFile, FileInfo outputFile)
{
return new [] {
$"-sDEVICE=pdfwrite",
$"-dNOPAUSE",
$"-dBATCH",
$"-sPAPERSIZE=a4",
#"-sFONTPATH=" + System.Environment.GetFolderPath(System.Environment.SpecialFolder.Fonts),
$"-sOutputFile={outputFile.FullName}",
$"{inputFile.FullName}",
};
}
Someone in #csharp pointed out to me, that in c, the first argument is always the name of the command. So he suggested to just put "gs" as the first argument (as a dummy) and try... And that's what actually solved my problem.
So this is how the working GetArgs(...) looks:
private IEnumerable<string> GetArgs(FileInfo inputFile, FileInfo outputFile)
{
return new [] {
$"gs",
$"-sDEVICE=pdfwrite",
$"-dNOPAUSE",
$"-dBATCH",
$"-sPAPERSIZE=a4",
#"-sFONTPATH=" + System.Environment.GetFolderPath(System.Environment.SpecialFolder.Fonts),
$"-sOutputFile={outputFile.FullName}",
$"{inputFile.FullName}",
};
}
Let's say I have a directory with a set of XML files (for example, two files called ReadMacAddress.xml and ReadManufacturerId.xml) that I need to handle each one in a special way. Basically each of these XML files are a set of commands that are being received by my class.
Suppose I have an external class that is giving commands about which file should be opened,
public static void test()
{
string RecievedCommand = "ReadMacAddress"; //Command recieved from a queue
string baseDirectory = AppDomain.CurrentDomain.BaseDirectory;
string xml = File.ReadAllText(baseDirectory + "ReadMacAddress.xml");
}
To have the possibility of opening the file automatically based on which command is received I was thinking of doing the following, first defining an enum data structure with the names of the files and then using a switch case to differentiate between the different commands(name of the file that needs to be parsed) and then using this while parsing the file.
class My_EnumXML
{
public enum ReadXML
{
ReadMacAddress,
ReadManufacturerId,
}
}
class TestRead
{
public static void OpenFile()
{
string RecievedCommand = "ReadMacAddress";
string CurrentCommand = SMLReadInputs((My_EnumXML.ReadXML)RecievedCommand);
string xml = File.ReadAllText(baseDirectory + CurrentCommand);
}
public string SMLReadInputs(My_EnumXML.ReadXML pRecievedCommand)
{
string CurrentCommand = "";
switch (pRecievedCommand)
{
case My_EnumXML.ReadXML.ReadMacAddress:
CurrentCommand = Enum.GetName(typeof(My_EnumXML.ReadXML), 0);
case My_EnumXML.ReadXML.ReadMacAddress:
CurrentCommand = Enum.GetName(typeof(My_EnumXML.ReadXML), 0);
}
return CurrentCommand;
}
}
For this example I just used the name of two XML files but I have a 100 of these and I need to know if I am proceeding in the right way, especially since I cannot debug my code because the part about receiving commands from a message queue is being implemented by someone else.
Here is an example of what I want to do:
MessageBox.Show("Error line number " + CurrentLineNumber);
In the code above the CurrentLineNumber, should be the line number in the source code of this piece of code.
How can I do that?
In .NET 4.5 / C# 5, you can get the compiler to do this work for you, by writing a utility method that uses the new caller attributes:
using System.Runtime.CompilerServices;
static void SomeMethodSomewhere()
{
ShowMessage("Boo");
}
...
static void ShowMessage(string message,
[CallerLineNumber] int lineNumber = 0,
[CallerMemberName] string caller = null)
{
MessageBox.Show(message + " at line " + lineNumber + " (" + caller + ")");
}
This will display, for example:
Boo at line 39 (SomeMethodSomewhere)
There's also [CallerFilePath] which tells you the path of the original code file.
Use the StackFrame.GetFileLineNumber method, for example:
private static void ReportError(string message)
{
StackFrame callStack = new StackFrame(1, true);
MessageBox.Show("Error: " + message + ", File: " + callStack.GetFileName()
+ ", Line: " + callStack.GetFileLineNumber());
}
See Scott Hanselman's Blog entry for more information.
[Edit: Added the following]
For those using .Net 4.5 or later, consider the CallerFilePath, CallerMethodName and CallerLineNumber attributes in the System.Runtime.CompilerServices namespace. For example:
public void TraceMessage(string message,
[CallerMemberName] string callingMethod = "",
[CallerFilePath] string callingFilePath = "",
[CallerLineNumber] int callingFileLineNumber = 0)
{
// Write out message
}
The arguments must be string for CallerMemberName and CallerFilePath and an int for CallerLineNumber and must have a default value. Specifying these attributes on method parameters instructs the compiler to insert the appropriate value in the calling code at compile time, meaning it works through obfuscation. See Caller Information for more information.
I prefer one liners so:
int lineNumber = (new System.Diagnostics.StackFrame(0, true)).GetFileLineNumber();
In .NET 4.5 you can get the line number by creating the function:
static int LineNumber([System.Runtime.CompilerServices.CallerLineNumber] int lineNumber = 0)
{
return lineNumber;
}
Then each time you call LineNumber() you will have the current line. This has the advantage over any solution using the StackTrace that it should work in both debug and release.
So taking the original request of what is required, it would become:
MessageBox.Show("Error enter code here line number " + LineNumber());
This is building on the excellent answer by Marc Gravell.
For those who need a .NET 4.0+ method solution:
using System;
using System.IO;
using System.Diagnostics;
public static void Log(string message) {
StackFrame stackFrame = new System.Diagnostics.StackTrace(1).GetFrame(1);
string fileName = stackFrame.GetFileName();
string methodName = stackFrame.GetMethod().ToString();
int lineNumber = stackFrame.GetFileLineNumber();
Console.WriteLine("{0}({1}:{2})\n{3}", methodName, Path.GetFileName(fileName), lineNumber, message);
}
How to call:
void Test() {
Log("Look here!");
}
Output:
Void Test()(FILENAME.cs:104)
Look here!
Change the Console.WriteLine format how you like!
If its in a try catch block use this.
try
{
//Do something
}
catch (Exception ex)
{
System.Diagnostics.StackTrace trace = new System.Diagnostics.StackTrace(ex, true);
Console.WriteLine("Line: " + trace.GetFrame(0).GetFileLineNumber());
}
You only asked about the line number and with nullable project type, you then need to use a something like this
internal class Utils
{
public static int Line([CallerLineNumber] int? lineNumber =null)=>lineNumber;
}
in your code, if you like to get a line number you then just call
var line=Utils.Line();
if you are logging and you would like to document the line number in say logging than call the method like this
public void MyMethod(int someValue)
{
switch(someValue)
{
case 1:
if(abc<xyz)
{
logger.LogInformation("case value {someValue} this line {line} was true", someValue ,Utils.Line()-2);
}
break;
case 2:
logger.LogInformation("case value {someValue} this {line} was executed",someValue,Utils.Line());
break;
caste 3:
logger.LogInformation("case value {someValue} this {line} was executed",someValue,Utils.Line());
break;
}
}
You can extend this pattern with any of the other [CallerXXX] methods and not use them where ever, not just in the method parameters.
in the Nuget Package Walter I use a super cool class named ExceptionObject
if you import the NuGet package you have some nice extension methods on the Exception class as well as access to a CallStack showing the call chain including method parameters and parameter values of all methods called.
It's like a stack of an exception only with values showing how you got where you got with what values.
public void MyMethod()
{
try
{
//get me all methods, signatures, parameters line numbers file names etc used as well as assembly info of all assemblies used for documentation of how the code got here
var stack= new CallStack();
foreach( var frame in StackedFrames)
{
logger.LogDebug(frame.ToString());
}
}
catch(SqlException e)
{
var ex = new ExceptionObject(e);
logger.LogException(e,"{this} exception due to {message} {server} {procedure} TSQL-line:{sqlline}\n{TSQL}"
,e.GetType().Name
,e.Message
,ex.SqlServer
,ex.SqlProcedureName
,ex.SqlLineNumber
,ex.Tsql
,ex.CallStack);
}
catch(Exception e)
{
var ex = new ExceptionObject(e);
logger.LogException(e,"{this} exception due to {message} signature: signature}\nCallStack:", e.GetType().Name,e.Message,ex.Signature,ex.CallStack);
}
}
how to access a text file based on its prefix
var str = GrvGeneral.Properties.Resources.ResourceManager.GetString(configFile + "_Nlog_Config");
var str1 = GrvGeneral.Properties.Resources.ResourceManager.GetObject(configFile + "_Nlog_Config");
where the configfile is the prefix of the resourcefile A & B .
Based on the configfile contents (prefix) the resource file A & B has to be accessed .
Use the DirectoryInfo class (documentation). Then you can call the GetFiles with a search pattern.
string searchPattern = "abc*.*"; // This would be for you to construct your prefix
DirectoryInfo di = new DirectoryInfo(#"C:\Path\To\Your\Dir");
FileInfo[] files = di.GetFiles(searchPattern);
Edit: If you have a way of constructing the actual file name you're looking for, you can go directly to the FileInfo class, otherwise you'll have to iterate through the matching files in my previous example.
Your question is rather vague...but it sounds like you want to get the text contents of an embedded resource. Usually you would do that using Assembly.GetManifestResourceStream. You can always use LINQ along with Assembly.GetManifestResourceNames() to find the name of an embedded file matching a pattern.
The ResourceManager class is more often used for automatically retrieving localized string resources, such as labels and error messages in different languages.
update: A more generalized example:
internal static class RsrcUtil {
private static Assembly _thisAssembly;
private static Assembly thisAssembly {
get {
if (_thisAssembly == null) { _thisAssembly = typeof(RsrcUtil).Assembly; }
return _thisAssembly;
}
}
internal static string GetNlogConfig(string prefix) {
return GetResourceText(#"Some\Folder\" + prefix + ".nlog.config");
}
internal static string FindResource(string pattern) {
return thisAssembly.GetManifestResourceNames()
.FirstOrDefault(x => Regex.IsMatch(x, pattern));
}
internal static string GetResourceText(string resourceName) {
string result = string.Empty;
if (thisAssembly.GetManifestResourceInfo(resourceName) != null) {
using (Stream stream = thisAssembly.GetManifestResourceStream(resourceName)) {
result = new StreamReader(stream).ReadToEnd();
}
}
return result;
}
}
Using the example:
string aconfig = RsrcUtil.GetNlogConfig("a");
string bconfigname = RsrcUtil.FindResource(#"b\.\w+\.config$");
string bconfig = RsrcUtil.GetResourceText(bconfigname);
Thanks all for the suggestion made for my earlier query regarding to the getlist and copy.
I have only one issue here
String realname= "test" //am getting this value from Db,so is this anyway i can use like that rather than
string realname="test"//i know i can do like string realname=""+Dbvalue+"";
Am just wondering why it doesn't return anyvalue if don't use "*" ?
class Program
{
static void Main(string[] args)
{
var getfiles = new fileshare.Program();
string realname = "*test*";
foreach (var file in getfiles.GetFileList(realname))
{getfiles.copytolocal(file.FullName); }
}
private FileInfo[] GetFileList(string pattern)
{
var di = new DirectoryInfo(#"\\testserv01\dev");
return di.GetFiles(pattern);
}
private void copytolocal(string filename)
{
string nameonly = Path.GetFileName(filename);
File.Copy(filename,Path.Combine(#"c:\",nameonly));
}
}
Thanks in Advance.
I know this is a bit glib but really you need to start looking at the documentation of the functionality you are using: http://msdn.microsoft.com/en-us/library/8he88b63.aspx
that said the reason is that * is a wildcard - if you use "test" then you will only retrieve exact matches for "test".
the link above has some more examples.