VDM Scripting confusion???

[Tuning]

Just tried scrpting with VDM...

For eg:
VirtualDub.Open( "D:\temp\THX.avi",0,0);
VirtualDub.subset.Delete();
VirtualDub.Close();


If I use this script, and load the *.vcf through command line, an error is shown as no file is found....even if the file in reality exists!

Again if I change script like this:VirtualDub.Open( "D:\\temp\\THX.avi",0,0);
VirtualDub.subset.Delete();
VirtualDub.Close();

It works. :confused:
So does this implies every script need to have "//" instead of single.

the input file part in script is a string generated according to file opened in my application...

Thanks.

[fccHandler]

Yes, it uses a C convention in which "\" is always treated as the first character of an escape code, used to allow un-typeable characters in a string. For instance, "\n" = (new line), "\t" = (tab), "\0" = (null character), and so on.

"\\" is the escape code for "\". ;)

[Leak]

Originally posted by fccHandler
Yes, it uses a C convention in which "\" is always treated as the first character of an escape code, used to allow un-typeable characters in a string. For instance, "\n" = (new line), "\t" = (tab), "\0" = (null character), and so on.

"\\" is the escape code for "\". ;)

Well, if you don't want to escape your backslashes you can always replace them with forward slashes, i.e. "C:/foo/bar/baz.avi"... :)

np: Static/Valerie Trebeljahr - Turn On Switch Off (Flavour Has No Name)

[Tuning]

Thanks fcchandler and Leak. But here I could not replace the slashes as in c convention. That is, I use VB.net or Delphi's open/save file dialog to save the input/output filename as a string. Then in script the input and output are replaced at runtime. Then a text file writing is done to generate vcf file.
So if this is true, then my idea is not gonna work.:(

Is there a better way integrating input/output in VDM script or job file? Or Is the comments that is to be replaced. Developers, how is this done generally?

Any comments are appreciated. :)

Thanks:rolleyes:

[fccHandler]

Why can't you simply modify the string(s) before writing them into the .vcf file, replacing each "\" with "\\" (or "/", as Leak suggests)?

I really don't understand what the problem is. Perhaps it would make more sense if you posted your VB code. (Sorry to say, I'm not familiar with Delphi...)

[Tuning]

Why can't you simply modify the string(s) before writing them into the .vcf file, replacing each "\" with "\\" (or "/", as Leak suggests)?
Reason is simple, I don't know how to code a function that searches and replaces "/" with "//" making it more complex than now. So I thought there may be some simple method than coding this. If there is no other way then I'm on to it.:mad:. :D

PS: Its the initial stage of my app and code pasting will be childish.
:o , so....

[fccHandler]

This will work in VB:


x = 1
Do While x <= Len(filename$)
If Mid$(filename$, x, 1) = "\" Then
filename$ = Left$(filename$, x) & "\" & Right$(filename$, Len(filename$) - x)
x = x + 1
End If
x = x + 1
Loop

[Tuning]

AHA!, Thanks Fcchandler.

[stax76]

in .NET there are various possibilities to dublicate a character, here the ones I remember:


'replace method of the string class

Dim s1 As String = "C:\tes\t.txt".Replace("\", "\\")


'legacy crap

Dim s2 As String = Microsoft.VisualBasic.Replace("C:\tes\t.txt", "\", "\\")


'regular expressions, learn it now!

Dim s3 As String = System.Text.RegularExpressions.Regex.Replace("C:\tes\t.txt", "\\", "\\")


'StringBuilder has performance advantages

Dim s4 As String = New System.Text.StringBuilder("C:\tes\t.txt").Replace("\", "\\").ToString()


'for each works with a string because the string class implements the IEnumerable interface

Dim s5 As String

For Each i As String In "C:\tes\t.txt"
s5 += i
If i = "\" Then
s5 += "\"
End If
Next

[fccHandler]

Good call by Dolemite! I forgot about the Replace() function. :D

[Tuning]

Thanks Dolemite! :) . Your method is very easy. I will try it next.

Btw, i did it in my own way, created a VC++ dll with this code. I can now use it for any app that uses Vdub/VDM.
struct string stringformat(struct string input)
{

struct string temp1;

for(int i=0,j=0;i<100,j<100;i++,j++)
{
if(input.a[i]==char(92))
{
temp1.a[j]=char(92);
temp1.a[++j]=char(92);//ASCII Code for backslash
}
else
temp1.a[j]=input.a[i];
}

return temp1;
}


Thanks for all of the comments. I must learn more patiently.:p