C / C++ / MFC

11-Jun-06 23:49

Perhaps this can guide: http://www.codersource.net/active_directory_programming_IADSUSER.html[^].

removing spaces-newbie

antonaras11-Jun-06 21:41

Re: removing spaces-newbie [modified]

11-Jun-06 21:41

Hi guys

Lets say i have a file with some text in it that the words are seperated with more than one space in between
ex. This___________is_______writen______in____a_file____assume______that__underscores____
are________spaces_____how___can_i___remove____them?

i want to store this in a string but in this form:

This is writen in a file assume that underscores are spaces how can i remove them?

any ideas i tried some things but nothing works
thank u in advance

Viorel.11-Jun-06 21:52

11-Jun-06 21:52

In MFC, I think you can read the file in line-by-line manner using CStdioFile class, and then reduce the number of spaces using multiple calls to Replace member of CString class:

while(s.Replace("__", "_") != 0);

Next, you can write strings to a new file. If you need to store them in the same file, then remove the old file and rename the new one.

-- modified at 4:05 Monday 12th June, 2006

antonaras11-Jun-06 21:59

11-Jun-06 21:59

Thanks for the reply Viorel
I'm not using MFC so is it possible to use the functions that u mention.
also using
while(s.Replace(" ", " ") != 0);//i'm going to loose all spaces i need to leave only one.

thanks again Viorel

Sarath C11-Jun-06 22:08

Sarath C

11-Jun-06 22:08

u can use strtok function to remove or find special character in a given string.

using simlple logic, u can make it suit for ur purpose.

strtok, wcstok, _mbstok[^]

Sa^Rath.

"Don't Do Different things... Do Things Differently..."

Understanding State Pattern in C++

antonaras11-Jun-06 22:22

11-Jun-06 22:22

Hey Sarath thanks for the reply

can i ask u a couple of questions on strtok?

the link u gave me has an example of using strtok

char string[] = "A string\tof ,,tokens\nand some more tokens";
char seps[] = " ,\t\n";
char *token;

can i use a string instead of char string[]?
also can i put any number of deliminars in seps?

thanks a lot for the help

toxcct11-Jun-06 22:55

toxcct

11-Jun-06 22:55

did you read my replies ? Unsure | :~

TOXCCT >>> GEII power

[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

toxcct11-Jun-06 22:12

toxcct

11-Jun-06 22:12

use

<a href="http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vcstdlib/html/vclrf_string_basicstringreplace.asp" rel="nofollow">std::string::replace()</a>[<a href="http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vcstdlib/html/vclrf_string_basicstringreplace.asp" target="_blank" rel="nofollow" title="New Window">^</a>]

instead...

TOXCCT >>> GEII power

[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

Sarath C11-Jun-06 22:16

Sarath C

11-Jun-06 22:16

good solution. thanks for the info Smile | :)

Sa^Rath.

"Don't Do Different things... Do Things Differently..."

Understanding State Pattern in C++

Viorel.11-Jun-06 22:19

11-Jun-06 22:19

If you do not use MFC, you can use STL. You can read the file using a stream object like ifstream, store strings in string object, and use find function to find a sequence consisting of two spaces. Then use find_first_not_of to find the end of sequence, and call erase to remove unneeded sequences.

If you do not use STL, you can use library functions: fgets to get strings, strstr or strchr to find spaces, and so on.

If you need to do this manually, you can open the file in Notepad and use Replace command

antonaras wrote:
i'm going to loose all spaces i need to leave only one.

The first parameter of Replace contains two spaces, and the second one -- a single space, so any sequence of more then one spaces will be replaced with only one (maybe not so fast as possible). For convenience, I modified the sample using underscores.

antonaras11-Jun-06 22:31

11-Jun-06 22:31

Thanks Viorel your answer is very clear and helpful
appriciate all the help

David Crow12-Jun-06 3:08

David Crow

12-Jun-06 3:08

Viorel. wrote:
while(s.Replace("__", "_") != 0);

The loop is not required.

"The largest fire starts but with the smallest spark." - David Crow

"Judge not by the eye but by the heart." - Native American Proverb

Viorel.12-Jun-06 3:20

12-Jun-06 3:20

I think the loop is required. Otherwise, in case of three consecutive spaces, only first two ones will be replaced with one space, and we will obtain two spaces in the result. Therefore we have to repeat the replace operation.

It is possible to avoid loop and improve performance using other approaches.