On 03/19/2011 04:51 PM, Andrej Mitrovic wrote:
> I'm trying to do something like the following:
>
> File inputfile;
> foreach (string name; dirEntries(r".\subdir\", SpanMode.shallow))
> {
> if (!(isFile(name)&& getExt(name) == "d"))
> {
> continue;
> }
>
> inputfile = File(name, "a+");
>
> foreach (line; inputfile.byLine)
> {
> if (line == "import foo.d")
> {
> inputfile.write("import bar.d"); // or ideally `line =
"import bar.d"`
> }
> }
> }
>
> That obviously won't work. I think I might need to use the `fseek`
function to keep track of where I am in the file, or something like that.
That's not a good idea with text files.
Even for binary files, the file must have a well defined format. It is
not possible to insert or remove bytes from a file due to low level
reasons. The file systems that I am aware of don't provide such interfaces.
And writing after fseek would overwrite existing data.
Like Jonathan M Davis said, the best is to read from the source and
write to the destination.
Ali
