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c++ gurus? - read in arbitrary csv...

 
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Aske
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c++ gurus? - read in arbitrary csv...
« on: April 26, 2007, 07:23:37 PM »

I used to be ok with c++ ... I'm still moderately ok (just browsed an old book)...

i remember strongly how to work with arrays, ints, do math, write function calls , etc

i remember diddly squat about how to work with strings (hence, how to adequately treat the stream that fget or  fscanf  takes in, etc) ....

so...

ANYONE have handy a good generic  csv reader that will take arbitrary csv file and read it into an array on the fly, each whitespace or comma (and obviously line ends) creating new array elements? 

I am sure I can write it ... but I'd rather save debugging time...
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Russia has invaded a sovereign neighboring state and threatens a democratic government elected by its people. Such an action is unacceptable in the 21st century.
--  Chimpy McFlightsuit, CEO of Bu$hco Industries of 'Merka
Uisce Beatha
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Re: c++ gurus? - read in arbitrary csv...
« Reply #1 on: April 26, 2007, 07:35:05 PM »

It's been a million years and the last time I had C++ code laying around it was probably on a 286. 

But... strings are just arrays of characters.  If you're comfortable with arrays just str.copy(buf, i) and go crazy. 

But you'll have to debug.   Devil

Man, that was ages ago.  I'm old.

edit:  If you're gonna break on whitespace it's technically not CSV, yes?   Devil
« Last Edit: April 26, 2007, 07:40:02 PM by Uisce Beatha » Logged Return to Top

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Aske
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Re: c++ gurus? - read in arbitrary csv...
« Reply #2 on: April 26, 2007, 07:41:31 PM »

It's been a million years and the last time I had C++ code laying around it was probably on a 286. 

But... strings are just arrays of characters.  If you're comfortable with arrays just str.copy(buf, i) and go crazy. 

But you'll have to debug.   Devil

Man, that was ages ago.  I'm old.

edit:  If you're gonna break on whitespace it's technically not CSV, yes?   Devil


per your edit note... i was thinking about if the 'cell' is empty...   
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Russia has invaded a sovereign neighboring state and threatens a democratic government elected by its people. Such an action is unacceptable in the 21st century.
--  Chimpy McFlightsuit, CEO of Bu$hco Industries of 'Merka
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Re: c++ gurus? - read in arbitrary csv...
« Reply #3 on: April 26, 2007, 07:45:09 PM »

I was only *just* starting to learn c++ a year or so ago, then had to drop it 'cause of lack of time.  Sad
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gleek
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E chu ta!

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Re: c++ gurus? - read in arbitrary csv...
« Reply #4 on: April 26, 2007, 07:47:25 PM »

http://www.linuxquestions...s/showthread.php?t=126337

Code:
#include <iostream>
#include <fstream>
#include <strstream>

using namespace std;

int main()
{
char buffer1[2048];
char buffer2[2048];
istrstream ostr1(buffer1, 2048);
istrstream ostr2(buffer2, 2048);
int values1[100];
int values2[100];
int c=0;

ifstream fin("data.txt");

fin.getline(buffer1, 2048);
fin.getline(buffer2, 2048);

while (ostr1 >> values1[c])
{
ostr2 >> values2[c++];
}

for (int i=0;i<c;i++)
{
cout << values1[i] << ":" << values2[i] << endl;
}

return 0;
}
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Aske
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Re: c++ gurus? - read in arbitrary csv...
« Reply #5 on: April 26, 2007, 07:49:31 PM »

http://www.linuxquestions...s/showthread.php?t=126337

Code:
#include <iostream>
#include <fstream>
#include <strstream>

using namespace std;

int main()
{
char buffer1[2048];
char buffer2[2048];
istrstream ostr1(buffer1, 2048);
istrstream ostr2(buffer2, 2048);
int values1[100];
int values2[100];
int c=0;

ifstream fin("data.txt");

fin.getline(buffer1, 2048);
fin.getline(buffer2, 2048);

while (ostr1 >> values1[c])
{
ostr2 >> values2[c++];
}

for (int i=0;i<c;i++)
{
cout << values1[i] << ":" << values2[i] << endl;
}

return 0;
}


thanks, I will give it a try.
 Cheers
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Russia has invaded a sovereign neighboring state and threatens a democratic government elected by its people. Such an action is unacceptable in the 21st century.
--  Chimpy McFlightsuit, CEO of Bu$hco Industries of 'Merka
gleek
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Re: c++ gurus? - read in arbitrary csv...
« Reply #6 on: April 26, 2007, 07:51:18 PM »

I don't want a large farva.
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Woman, open the door, don't let it sting. I wanna breathe that fire again.
Aske
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Re: c++ gurus? - read in arbitrary csv...
« Reply #7 on: April 26, 2007, 07:57:41 PM »

I don't want a large farva.

Shenanigans.
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Quote
Russia has invaded a sovereign neighboring state and threatens a democratic government elected by its people. Such an action is unacceptable in the 21st century.
--  Chimpy McFlightsuit, CEO of Bu$hco Industries of 'Merka
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Re: c++ gurus? - read in arbitrary csv...
« Reply #8 on: April 27, 2007, 08:50:02 AM »

I'll have to pistol whip you now.
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Magnus Frater te spectat
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