// Start writing a tmpfile
FILE *lock_fopen (const char *filename, int *info)
{
char newfile[512];
FILE *fp;
int no = getpid ();
// Get a filename that doesn't already exist
do
{
sprintf (newfile, "%s_%d.tmp", filename, no++);
}
while ((fp = fopen_ (newfile, "r")) && (fclose_ (fp), 1));
*info = --no;
return fopen_ (newfile, "w");
}
uint8_t GPX_DocumentOpen(int8_t *name, GPX_Document_t *doc)
{
uint8_t retvalue = 0;
uint16_t i;
int8_t c;
const prog_char *str;
if(doc == NULL) return(0);
GPX_DocumentInit(doc); // intialize the document with resetvalues
doc->file = fopen_(name,'a'); // open a new file with the specified filename on the memorycard.
if(doc->file != NULL) // could the file be opened?
{
retvalue = 1; // the document could be created on the drive.
doc->state = GPX_DOC_OPENED; // change document state to opened. At next a placemark has to be opened.
str = GPX_DOCUMENT_HEADER; // write the gpx-header to the document..
for(i= 0; i < sizeof(GPX_DOCUMENT_HEADER)-1; i++)
{
c = (int8_t)pgm_read_byte(str++); // get byte from flash
fputc_(c, doc->file); // and write that to sd-card
}
}
return(retvalue);
}
u8 GPX_DocumentOpen(s8 *name, GPX_Document_t *doc)
{
u8 retvalue = 0;
if(doc == NULL) return(0);
GPX_DocumentInit(doc); // intialize the document with resetvalues
doc->file = fopen_(name,'a'); // open a new file with the specified filename on the memorycard.
if(doc->file != NULL) // could the file be opened?
{
retvalue = 1; // the document could be created on the drive.
doc->state = GPX_DOC_OPENED; // change document state to opened. At next a placemark has to be opened.
fwrite_((void*)GPX_DOCUMENT_HEADER, sizeof(GPX_DOCUMENT_HEADER)-1,1,doc->file);// write the gpx-header to the document.
}
return(retvalue);
}
