Active Topics
-
Nokia FW servers dead (129)
to MeeGo / Harmattan by tvandorffy - 6 hrs, 34 mins ago -
Maemo.org user login (5)
to General by Maemish - 7 hrs, 47 mins ago -
How to force MMS to use cellular network for data? (3)
to SailfishOS by pichlo - 9 hrs, 23 mins ago -
Crash/poweroff after entering SIM PIN (7)
to Nokia N9 / N950 by pichlo - 9 hrs, 36 mins ago -
Phone Camera Competition May 2021: "spring is here" (3)
to General by robthebold - 2 days, 23 hrs ago -
Not clickbait "NOKIA STILL MAKING PHONES, BUT FOR INDUSTRIAL USES" (3)
to Competitors by biketool - 4 days, 3 hrs ago -
Phone Camera Competition April 2021: "Funny & Foolish" (38)
to General by peterleinchen - 4 days, 13 hrs ago -
A Palm OS thread ... and a thank you to the community (24)
to Alternatives by meemorph - 5 days, 8 hrs ago -
MeeGo v1.2.0.1x for Netbook (0)
to MeeGo / Harmattan by teroyk - 5 days, 9 hrs ago - more...
| The Following User Says Thank You to jaeezzy For This Useful Post: | ||
|
2009-10-19
, 02:14
|
|
Posts: 452 |
Thanked: 522 times |
Joined on Nov 2007
|
#2
|
Originally Posted by jaeezzy
Hi,
I'm trying to read/write from a file in the scratchbox (maemo5sdk) but just being unsuccessful. So, I'm wondering is there a different way to do such in maemo for now I'm trying with FILE *fptr = fopen("filename", "mode"); Its just returning me an error which I've set up if the fptr is NULL. This is for a home widget which will read the file to initialize its value with the file's contents and save the values to the same file when new settings are applied. Any help/suggestion would be greatly appreciated. Thank you.
A couple things;
1. How did you create the file (inside or outside of scratchbox)
2. Are you sure of the path . If you do "~/MyDocs/" this will be your MyDocs folder.
3. What is the mode you are picking?
Nathan
|
|
2009-10-19
, 02:54
|
|
Posts: 25 |
Thanked: 12 times |
Joined on Mar 2008
@ Warsaw, Poland
|
#3
|
What file open mode are you trying? Does the file exist? What is "errno" set to after you do fopen()?
From the `man 3 fopen'
Oh, and you should also be able to try "strace ./path/to/your/binary", which should already tell what fopen() returns (with a meaningful error name, like EPERM or whatever is the error you get).
Once you get the error "name" you can look-up what it means in `man 3 errno'
Last edited by arachnist; 2009-10-19 at 03:16. Reason: Forgot about strace
From the `man 3 fopen'
RETURN VALUE
Upon successful completion fopen(), fdopen() and freopen() return a FILE pointer. Oth‐
erwise, NULL is returned and errno is set to indicate the error.
Once you get the error "name" you can look-up what it means in `man 3 errno'
Last edited by arachnist; 2009-10-19 at 03:16. Reason: Forgot about strace
| The Following User Says Thank You to arachnist For This Useful Post: | ||
 |
|
2009-10-19
, 03:17
|
|
Posts: 664 |
Thanked: 160 times |
Joined on Jul 2008
@ Australia
|
#4
|
Thanks Nathan for the reply. After you said, I created the file inside scratchbox and before as it was in the same working directory, I wan't giving the full address, now I did and it is reading but the problem now is, I've contents in the file as follows:
folder: /home/user/somedir
sthelse: somevalue
So, I decided to use fscanf(); and check if it reaches the end with !feof(fPtr); but it doesn't seem to be doing what it's suppose to do as I put I g_print() statement and it keeps printing that. Btw, I created the file with vim inside scratchbox.
folder: /home/user/somedir
sthelse: somevalue
So, I decided to use fscanf(); and check if it reaches the end with !feof(fPtr); but it doesn't seem to be doing what it's suppose to do as I put I g_print() statement and it keeps printing that. Btw, I created the file with vim inside scratchbox.
|
|
2009-10-19
, 05:07
|
|
Posts: 664 |
Thanked: 160 times |
Joined on Jul 2008
@ Australia
|
#5
|
Thanks guys its finally sorted. I'm really freaked out- first it doesn't work at all and later it is all working. It's all good, just that in-between there's lot of head banging. Thanks..
Last edited by jaeezzy; 2009-10-19 at 08:36.
Last edited by jaeezzy; 2009-10-19 at 08:36.
I'm trying to read/write from a file in the scratchbox (maemo5sdk) but just being unsuccessful. So, I'm wondering is there a different way to do such in maemo for now I'm trying with FILE *fptr = fopen("filename", "mode"); Its just returning me an error which I've set up if the fptr is NULL. This is for a home widget which will read the file to initialize its value with the file's contents and save the values to the same file when new settings are applied. Any help/suggestion would be greatly appreciated. Thank you.