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Hi,
Im using PAlib Community Release 080203 and...
the following code has and error...
the line with the error is

Code:

/*THIS IS THE LINE !*/while(!dirnext(dir, item, &fileStat))

(line 129...)

when the line is commented, the program keeps prefectly in loop, in the main function...

but when uncommented, the program freezes on the line

Code:

debug("exiting");
return OK;
}

where OK is defined as 0.

here is the 'full' code:

Code:

//INCLUDES

// Include for PA_Lib
#include <PA9.h>

//Includes for fat lib
#include <fat.h>
#include <sys/dir.h>

//DEFINES
#define MENU_END 0
#define MENU_SELECTABLE 1
#define MENU_NOT_SELECTABLE 2
#define MENU_MAX_LINES 18
#define MENU_SYMBOL "*"
#define MENU_MAX_NAME 31

#define BROWSETYPE_FOLDER 0
#define BROWSETYPE_FILE 1
#define BROWSE_NAME_SIZE 100
#define BROWSE_CURRENT_DIR "."
#define BROWSE_SOURCE_DIR ".."

#define OK 0
#define ERROR_OPEN_DIR 1
#define INPUT_ERROR 2
#define ERROR_ALLOCATING_VAR 3
#define LIMIT_ERROR 4
#define CANCEL 5
#define BUG 666;

//TYPEDEFS
//file list struct...prev could be removed...
typedef struct browseTypeStruct{
char name[MENU_MAX_NAME+1];
unsigned char type;
struct browseTypeStruct *next;
struct browseTypeStruct *prev;
}browseType;

//PROTOS
void debug(char *input);
browseType *getBrowseItem(browseType *first, unsigned num);
int browseFile(char *home, char *path, unsigned char browseType);

//FUNCTIONS
void debug(char *input)
{
unsigned char counter;

//check if 'input' fits on the screen...
if(strlen(input) > 31)
{
   debug("DEBUG SIZE EXCEEDED");
}else{
   counter = 31 - strlen(input);
   PA_Print(1, "%s", input);

   //this is for another bug... the text was being garbled if I dont specifically set it
   while(counter)
   {
      PA_Print(1, " ");
      counter--;
   }
   PA_Print(1, "\n");
}

//there was a time where the upper screen just went black..so this is a timer to stop the program for a few seconds
//for the user to be able to read the log... just for debugging purpouses...
counter = 20;
while(counter)
{
   PA_WaitForVBL();
   counter--;
}
}

browseType *getBrowseItem(browseType *first, unsigned num)
{
browseType *current;
unsigned counter;

current = first;
for(counter = 0; ((counter < num)&&(current != NULL)); counter ++)
{
   current = current->next;
}
return current;
}

int browseFile(char *home, char *pathOut, unsigned char browseForType)
{
struct stat fileStat;             //to check wether the item is a file or folder.
browseType *first = NULL, *current = NULL, *new; //create the file list.
char item[BROWSE_NAME_SIZE+1];          //not really needed..but without this I would
                     //have to allocate the first list item before checking the
                     //first item...whatever...

unsigned offset, choice, counter; //offset and choice are explained later... counter is a loop counter...
unsigned lastItem = 0;       //used to limit the offset+choice...see later.
unsigned char waiting;       //status... if the menu needs to be reput or the file list updated...
char path[256];          //I was using the 'pathOut' var but the program was resetting it...see later.

//check for possible programming errors...who knows...
if((home == NULL)||(path == NULL))
   return INPUT_ERROR;

//to open the home dir
//well...this does not limit the user to home dir and subdirs... just to put a place to start browsing.
strcpy(path, home);

waiting = 1;
while(waiting)
{

   //get file list for path directory
   DIR_ITER* dir = diropen(path);
   if(dir == NULL)
   {
      debug("Error opening dir...");
      return ERROR_OPEN_DIR;
   }

   debug("Directory opened:");
   debug(path);

   //create dir list

/*THIS IS THE LINE !*/while(!dirnext(dir, item, &fileStat))

   {
   }

   debug("Created list of directories");

   //close dir
   dirclose (dir);
   debug("Directory closed");

   {
   }

   debug("Going to free list");

   //free dir list
   current = first;
   while(current != NULL)
   {
      first = current->next;
      free(current);
      current = first;
   }

   first = current = new = NULL;

   debug("File list freed");

   waiting = 0;
}

debug(path);
strcpy(pathOut, path);
debug(pathOut);
debug("exiting");
return OK;
}

// Function: main()
int main(void)
{
int option;
char path[256], home[256];
PA_Init(); // Initializes PA_Lib
PA_InitVBL(); // Initializes a standard VBL

PA_InitText(0, 0);
PA_InitText(1, 1);

debug("Palib init");

//from the example...did not try to remove the following lines yet...
PA_WaitForVBL();
PA_WaitForVBL();
PA_WaitForVBL();

if(fatInitDefault())
   debug("Libfat init");
else{
   debug("Libfat ERROR...");
   debug("reboot !");
   PA_WaitForVBL();
}

// Infinite loop to keep the program running
while (1)
{
   strcpy(home, "/");
   //did no want to use browseFile("/", path, BROWSETYPE_FILE);
   //but would not make a diference...probably
   option = browseFile(home, path, BROWSETYPE_FILE);

   //just to know if you escaped the function... I never did U_U
   debug("out..");
   if(!option)
      PA_Print(1, "path \"%s\"\n", path);
   else
      PA_Print(1, "ERROR %d\n", option);
   PA_WaitForVBL();
}

return 0;
} // End of main()

since the palib forum is down... and their 'new' forum is quite deserted...
well, if anyone can help, I appreciate it ^^

(well...perhaps if someone could compile this with the stable release of palib... or tell me where I can find a function that allows browsing for files/folders...)

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DS development > Problem with PAlib and libfat...

#152985 - SnakerDLK - Sun Mar 23, 2008 7:07 pm