CODEWITHSUNDEEP
c#file-ioescaping
KrisTrip
KrisTrip

Reputation: 5043

C# double-quoted path name being escaped when read from file

I am trying to read in a text input file that contains a list of filenames (one per line). However, I am running into an issue if the user double-quotes the path (because it has a space in it).

For example, a normal input file might have:
C:\test\test.tiff
C:\test\anothertest.tiff
C:\test\lasttest.tiff

These get read in fine by my code ("C:\\test\\test.tiff" etc)

However, if I have the following input file:
"C:\test with spaces\test.tiff"
"C:\test with spaces\anothertest.tiff"
"C:\test with spaces\lasttest.tiff"

These get read in double-quotes and all ("\"C:\\test with spaces\\test.tiff\"" etc). This becomes a problem when I try to open the files (I understandably get invalid character exceptions). My question is, how do I fix this? I want to allow users to input quoted strings and handle them correctly. My first impression was to just write a little method that strips off beginning or ending quotes, but I thought there might be a better way.

Upvotes: 0

Views: 3951

Answers (5)

Chris
Chris

Reputation: 375

Maybe try using string literals?

string bob = @"c:\some file\some document";

The @ escapes these backslash problems.

Upvotes: 1

D'Arcy Rittich
D'Arcy Rittich

Reputation: 171421

No need for a RegEx where a simple Replace will do:

var s = s.Replace("\"", "");

Upvotes: 2

Antony Koch
Antony Koch

Reputation: 2053

I think RegEx is quite heavy compared to a simple replace, so

File.ReadAllText(path.Replace('"',''));

Or similar would be my suggestion.

Upvotes: -1

Scott Chamberlain
Scott Chamberlain

Reputation: 127563

If you have only one file per line you can just do Regex.Replace(PathLine,"\"","")

If you don't you will need to split every time PathLine.Split(new string[] { "\" ", "\"\n" }, StringSplitOptions.RemoveEmptyEntries); then strip out the beginning "

Upvotes: 0

Jens
Jens

Reputation: 25563

My first impression was to just write a little method that strips of beginning or ending quotes...

Yeah, that's what I'd do, too. =)

Upvotes: 1

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