Re: How to parse a file and store few strings in an array - C / C++ / MFC Discussion Boards

Re: MCTS certification

CPallini9-Feb-12 20:49

CPallini

9-Feb-12 20:49

And you ask it at the native C++ forum?
Big Grin | :-D

Veni, vidi, vici.

Re: MCTS certification

Richard MacCutchan9-Feb-12 22:09

Richard MacCutchan

9-Feb-12 22:09

Why are you asking here? This is a Microsoft certification so go to the Microsoft web site and search there.

Unrequited desire is character building. OriginalGriff
I'm sitting here giving you a standing ovation - Len Goodman

Re: MCTS certification

shanmugarajaa9-Feb-12 22:47

shanmugarajaa

9-Feb-12 22:47

Thanks for your advices.

Re: MCTS certification

Rahul Rajat Singh15-Feb-12 20:15

Rahul Rajat Singh

15-Feb-12 20:15

Why do you need dumps. Dumps are the worst thing when it comes to certification. they take away the motivation for studies and i as i keep saying(learning is what matters the most in our profession)

USB flash drive serial number in VC++

RomTibi9-Feb-12 5:06

RomTibi

9-Feb-12 5:06

Can be obtained? Frown | :(

Generally storage devices.

36. When you surround an army, leave an outlet free.
...
Do not press a desperate foe too hard.

SUN-TZU - Art of War

Re: USB flash drive serial number in VC++

C^hris L^osinger9-Feb-12 5:32

C^hris L^osinger

9-Feb-12 5:32

google knows[^]

image processing toolkits | batch image processing

How to parse a file and store few strings in an array

Faez Shingeri8-Feb-12 22:28

Faez Shingeri

8-Feb-12 22:28

Hi,

What would be the best way to extract an array of strings (only the first strings separated by a "," ) encapsulated within the curly braces ( { } )from within a file...?

Eg: Test.txt
***************************
This is also in the text file

{ abc def ghi ,
jkl mno pqr ,
stu vwl yza ,
}

This is also in the text file
*****************************

I only want "abc" "jkl" and "stu" in an array..

Thanks,
Faez

Re: How to parse a file and store few strings in an array

SandipG 8-Feb-12 22:38

SandipG

8-Feb-12 22:38

What have you done so far??

Re: How to parse a file and store few strings in an array

Faez Shingeri8-Feb-12 22:47

Faez Shingeri

8-Feb-12 22:47

 int main()
{
char *buf[1024], *tok;
FILE *fp1, *fp2;
fp1=fopen("test.txt","r+");
fp2=fopen("newtest.txt","w+");

while(fgets(buf, bufsize, fp1) != NULL)
		{
		for(tok = strtok(buf,"{");tok !="}";)
			{
				fprintf(fp2, "%s",buf);
			}	
                }
fclose(fp2);
fclose(fp1);
}

modified 10-Feb-12 0:03am.

Re: How to parse a file and store few strings in an array

Richard MacCutchan8-Feb-12 23:13

Richard MacCutchan

8-Feb-12 23:13

Please use <pre> tags round your code (you can edit the above message) as it makes it so much easier to read.
Your call to strtok() should use a pattern of all the characters you wish to ignore, you can then use the first returned token on each line, something like:

C++

while(fgets(buf, bufsize, fp1) != NULL)
{
    tok = strtok(buf,"{ ,}");
    if (tok != NULL)
        printf("Token: %s\n", tok);
}

Unrequited desire is character building. OriginalGriff
I'm sitting here giving you a standing ovation - Len Goodman

Re: How to parse a file and store few strings in an array

David Crow9-Feb-12 2:33

David Crow

9-Feb-12 2:33

Did you really intend for buf to be an array of pointers?

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Re: How to parse a file and store few strings in an array

Richard MacCutchan9-Feb-12 2:58

Richard MacCutchan

9-Feb-12 2:58

Well spotted!

Unrequited desire is character building. OriginalGriff
I'm sitting here giving you a standing ovation - Len Goodman

Re: How to parse a file and store few strings in an array

Faez Shingeri9-Feb-12 17:55

Faez Shingeri

9-Feb-12 17:55

Lovely..! This program works like a charm.... Big Grin | :-D

But now I am getting some extra unwanted strings too till the point I wanto extract the needed string..

My new o/p file now look like

Token: DCLGEN
Token: LIBRARY
Token: ACTION
Token: LANGUAGE
Token: NAMES
Token: QUOTE
Token: COLSUFFIX
Token: IS
Token: EXEC
Token: POLICY_NO
Token: REG_NO
Token: EFFECTIVE_DATE
Token: EXPIRY_DATE
Token: CAN_EFF_DATE
Token: CAN_PRO_DATE
Token: RETURN_PREMIUM
Token: CAN_PROCESSED
Token: END-EXEC

But I want the strings only after EXEC and before END-EXEC... ie from POLICY_NO to CAN_PROCESSED... I tried using

while(strcmp("EXEC",tok))

but it ain't working .. :-/

Thanks in advance,
Faez

modified 10-Feb-12 0:05am.

Re: How to parse a file and store few strings in an array

Richard MacCutchan9-Feb-12 22:04

Richard MacCutchan

9-Feb-12 22:04

Try this:

C++

BOOL bCapture = FALSE; // flag to ignore unwanted tokens
while(fgets(buf, bufsize, fp1) != NULL)
{
    tok = strtok(buf,"{ ,}");
    if (tok != NULL)
    {
        if (bCapture == FALSE)
        {
            // not capturing yet, so check for start of list
            if (strcmp(tok, "EXEC") == 0)
                bCapture = TRUE;
        }
        else  // bCapture == TRUE
        {
            // bCapture is true so check for end of
            // list, or display token
            if (strcmp(tok, "END-EXEC") == 0)
                bCapture = FALSE;
            else
                printf("Token: %s\n", tok);
        }
    }
}

[edit]Fixed the "END-EXEC" string, thanks to Carlo for pointing it out.[/edit]

Unrequited desire is character building. OriginalGriff
I'm sitting here giving you a standing ovation - Len Goodman

modified 10-Feb-12 6:56am.

Re: How to parse a file and store few strings in an array

CPallini9-Feb-12 23:11

CPallini

9-Feb-12 23:11

My 5, though your code, as it stands, wouldn't match the-requirements. Big Grin | :-D

Veni, vidi, vici.

Re: How to parse a file and store few strings in an array

Richard MacCutchan10-Feb-12 0:42

Richard MacCutchan

10-Feb-12 0:42

I wrote it over breakfast; what's missing?

Unrequited desire is character building. OriginalGriff
I'm sitting here giving you a standing ovation - Len Goodman

Re: How to parse a file and store few strings in an array

CPallini10-Feb-12 0:48

CPallini

10-Feb-12 0:48

Nothing is missing, however an underscore is not an hyphen.
--Carlo The Nitpick.

Veni, vidi, vici.

Re: How to parse a file and store few strings in an array

Richard MacCutchan10-Feb-12 0:57

Richard MacCutchan

10-Feb-12 0:57

CPallini wrote:
Carlo The ~~Nitpick~~Eagle-Eye

FTFY

Unrequited desire is character building. OriginalGriff
I'm sitting here giving you a standing ovation - Len Goodman

Re: How to parse a file and store few strings in an array

Faez Shingeri10-Feb-12 1:26

Faez Shingeri

10-Feb-12 1:26

That code was a beauty again .... Big Grin | :-D

Actually... the final file after strtok() looks like the one below... Hmmm | :|

Token: DCLGEN
Token: LIBRARY
Token: ACTION
Token: LANGUAGE
Token: NAMES
Token: QUOTE
Token: COLSUFFIX
Token: IS
Token: EXEC
Token: POLICY_NO
Token: REG_NO
Token: EFFECTIVE_DATE
Token: EXPIRY_DATE
Token: CAN_EFF_DATE
Token: CAN_PRO_DATE
Token: RETURN_PREMIUM
Token: CAN_PROCESSED
Token: END-EXEC
Token: COBOL
Token: DCLCANCL
Token: POLICY_NO
Token: CN-POLICY-NO   //I need this string too in diff array name  tableRow[6][10]
Token: REG_NO
Token: CN-REG-NO	//I need this string too in diff array name  tableRow[6][10]
Token: EFFECTIVE_DATE
Token: CN-EFFECTIVE-DATE  //I need this string too in diff array name  tableRow[6][10]
Token: EXPIRY_DATE
Token: CN-EXPIRY-DATE	//I need this string too in diff array name  tableRow[6][10]
Token: CAN_EFF_DATE
Token: CN-CAN-EFF-DATE	//I need this string too in diff array name  tableRow[6][10]
Token: CAN_PRO_DATE
Token: CN-CAN-PRO-DATE  //I need this string too in diff array name  tableRow[6][10]
Token: RETURN_PREMIUM
Token: CN-RETURN-PREMIUM //I need this string too in diff array name  tableRow[6][10]
Token: CAN_PROCESSED
Token: CN-CAN-PROCESSED //I need this string too in diff array name  tableRow[6][10]
Token: THE

Your code cleverly extracted the strings within EXEC and END-EXEC which I stored in

char tableCol[6][10]

But now I am finding it really difficult to store the strings which are immediatedly followed by the "tabCol" string from the file... Frown | :(

ie CN-POLICY-NO, CN-REG-NO, CN-EFFECTIVE-DATE, CN-EXPIRY-DATE, CN-CAN-EFF-DATE, CN-CAN-PRO-DATE, CN-RETURN-PREMIUM & CN-CAN-PROCESSED which are to be stored in

char tableRow[6][10]

Apologies ... Frown | :(

Thanks a ton,
Faez

Re: How to parse a file and store few strings in an array

Richard MacCutchan10-Feb-12 6:26

Richard MacCutchan

10-Feb-12 6:26

Since they all begin with "CN-", you could add a test:

C++

if (strncmp(tok, "CN-", 3) == 0)
    printf ...

Alternatively you have to test for each one individually.

Unrequited desire is character building. OriginalGriff
I'm sitting here giving you a standing ovation - Len Goodman

Re: How to parse a file and store few strings in an array

Faez Shingeri11-Feb-12 6:39

Faez Shingeri

11-Feb-12 6:39

No no... It ain't always preceeded with "CN-" string ...
The strings which needs to be stored in TabRow array are followed by the second occurrence of each tableCol values...
Initially I also thought of using strcat () and append CN- to the tabCol values...
But den I realized that it was for this file only... Other files are completely different.

Regards,
Faez

Re: How to parse a file and store few strings in an array

Richard MacCutchan11-Feb-12 7:11

Richard MacCutchan

11-Feb-12 7:11

If you don't have a common character identifier to select your strings then there is little that can be done. And from what you say you will have different rules for different files so it's difficult to suggest any other options.

Unrequited desire is character building. OriginalGriff
I'm sitting here giving you a standing ovation - Len Goodman

Re: How to parse a file and store few strings in an array

Faez Shingeri12-Feb-12 19:19

Faez Shingeri

12-Feb-12 19:19

Finally I have come up witha Not-so-good code... But it works.. Smile | :)

I created another similar situation to parse from END-EXEC to End of File as below...

if (k == 0)
	   {
	     if (strcmp(tok, "END-EXEC") == 0)
	     k = 1;
	   }
else  
        {
           if (strcmp(tok, "THE") == 0)
           {
             k = 0;
           }
           else
           {
         	strcpy(tabRow[m],tok);m++;
              	fprintf(fp3,"Token: %s\n", tok);

           }
}
}
}
// Out of all the loops and condition now....

	j=0,n=0;
	for(j=0;j<=m;j++)
	{
		if(strcmp(tabCol[n],tabRow[j])==0)
		{
			k=j;
			strcpy(tabRow[n],tabRow[k+1]);
			n++;
		}
		else ;


	}
	for(k=0;k<n-1;k++)
	{
	printf("No %d Element under TableCol is = %s\n", k+1,tabCol[k]);
	printf("No %d Element under TableRow is = %s\n", k+1,tabRow[k]);
	}

It wud be nice to get ur comments on this... Big Grin | :-D

Thanks,
Faez

Re: How to parse a file and store few strings in an array

Richard MacCutchan12-Feb-12 21:39

Richard MacCutchan

12-Feb-12 21:39

Difficult to say really. Assuming it does what you want then that's fine, but I don't see any checks for the specific strings after the "END-EXEC" that you wish to save. Or perhaps that is what the line

C++

if(strcmp(tabCol[n],tabRow[j])==0)

is doing.

Unrequited desire is character building. OriginalGriff
I'm sitting here giving you a standing ovation - Len Goodman

Re: How to parse a file and store few strings in an array

David Crow10-Feb-12 7:14

David Crow

10-Feb-12 7:14

Faez Shingeri wrote:
...which are to be stored in
char tableRow[6][10]

Which won't be large enough.

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