adding a text in a file

I need to add in a text file(which is an xml file)a line text. I need to copy each line to the new file after reading the word 'here' I need to add a line then copy the rest of the text to the new one, Please I need an answer, Thank you

Answer 1

[Ken Atwell]

I would first get this working without file I/O:

 str = 'Add new text HERE and then the rest';
 ins = strfind(str, 'HERE') + 4; % Add 4 to account for length of "HERE"
 str = [str(1:ins) '(like so) ' str(ins+1:end) ];
 str

You're working with XML, so make sure the new string you are creating remains valid XML.

Then, use fopen, fread, and fclose to:

1. Open the original file
2. Read all of its contents
3. Close the original

Then do the text insertion, and then create a new file with fopen, fwrite, and fclose.

[suzie rodnick]

Thank you very much for your response:

I'm very new with matlab: Do I need to read the whole content of the file at ones or line by line?

[Ken Atwell]

MATLAB can go either way -- I read the whole file, but fgetl can go line by line (in a "for" loop, presumably). Remember that line breaks in XML are not required (they are there for human readability), so I would hesitate to write code that demands they be there.