/**
* tifiles_file_is_os:
* @filename: a filename as string.
*
* Check whether file is a FLASH OS file (tib or XXu)
*
* Return value: a boolean value.
**/
TIEXPORT2 int TICALL tifiles_file_is_os(const char *filename)
{
int i;
char *e = tifiles_fext_get(filename);
if (!strcmp(e, ""))
return 0;
if (!tifiles_file_is_ti(filename))
return 0;
if(tifiles_file_is_tib(filename))
return !0;
if(tifiles_file_is_tno(filename))
return !0;
for (i = 1; i < CALC_MAX + 1; i++)
{
if (!g_ascii_strcasecmp(e, FLASH_OS_FILE_EXT[i]))
return !0;
}
return 0;
}
/**
* tnsp_file_read_flash:
* @filename: name of flash file to open.
* @content: where to store the file content.
*
* Load the flash file into a #FlashContent structure.
*
* Structure content must be freed with #tifiles_content_delete_flash when
* no longer used. If error occurs, the structure content is released for you.
*
* Return value: an error code, 0 otherwise.
**/
int tnsp_file_read_flash(const char *filename, FlashContent *content)
{
FILE *f;
int c;
if (!tifiles_file_is_tno(filename))
return ERR_INVALID_FILE;
if (content == NULL)
{
tifiles_critical("%s: an argument is NULL", __FUNCTION__);
return ERR_INVALID_FILE;
}
f = g_fopen(filename, "rb");
if (f == NULL)
{
tifiles_info("Unable to open this file: %s\n", filename);
return ERR_FILE_OPEN;
}
content->model = CALC_NSPIRE;
for(c = 0; c != ' '; c=fgetc(f));
content->revision_major = fgetc(f);
fgetc(f);
content->revision_minor = fgetc(f);
fgetc(f);
for(c = 0; c != ' '; c=fgetc(f));
if (fscanf(f, "%i", &(content->data_length)) < 1)
{
goto tfrf;
}
rewind(f);
content->data_part = (uint8_t *)g_malloc0(content->data_length);
if (content->data_part == NULL)
{
fclose(f);
tifiles_content_delete_flash(content);
return ERR_MALLOC;
}
content->next = NULL;
if(fread(content->data_part, 1, content->data_length, f) < content->data_length) goto tfrf;
fclose(f);
return 0;
tfrf: // release on exit
tifiles_critical("%s: error reading / understanding file %s", __FUNCTION__, filename);
fclose(f);
tifiles_content_delete_flash(content);
return ERR_FILE_IO;
}
/**
* tnsp_file_read_flash:
* @filename: name of flash file to open.
* @content: where to store the file content.
*
* Load the flash file into a #FlashContent structure.
*
* Structure content must be freed with #tifiles_content_delete_flash when
* no longer used. If error occurs, the structure content is released for you.
*
* Return value: an error code, 0 otherwise.
**/
int tnsp_file_read_flash(const char *filename, FlashContent *content)
{
FILE *f;
int c;
long cur_pos;
uint32_t file_size;
int ret = ERR_FILE_IO;
if (content == NULL)
{
tifiles_critical("%s: an argument is NULL", __FUNCTION__);
return ERR_INVALID_FILE;
}
if (!tifiles_file_is_tno(filename))
{
ret = ERR_INVALID_FILE;
goto tfrf2;
}
f = g_fopen(filename, "rb");
if (f == NULL)
{
tifiles_info("Unable to open this file: %s", filename);
ret = ERR_FILE_OPEN;
goto tfrf2;
}
if (fseek(f, 0, SEEK_END) < 0) goto tfrf;
cur_pos = ftell(f);
if (cur_pos < 0) goto tfrf;
if (fseek(f, 0, SEEK_SET) < 0) goto tfrf;
// The Nspire series' members have at best 128 MB of Flash (TODO: modify this code if this no longer holds).
// Flash files larger than that size are insane.
if (cur_pos >= (128L << 20))
{
ret = ERR_INVALID_FILE;
goto tfrf;
}
file_size = (uint32_t)cur_pos;
content->model = CALC_NSPIRE;
// Skip chars.
c = 0;
while (c != ' ')
{
c = fgetc(f);
if (c == EOF)
{
goto tfrf;
}
}
// Read revision major.
c = fgetc(f);
if (c == EOF)
{
goto tfrf;
}
content->revision_major = c;
// Skip char.
c = fgetc(f);
if (c == EOF)
{
goto tfrf;
}
// Read revision minor.
c = fgetc(f);
if (c == EOF)
{
goto tfrf;
}
content->revision_minor = c;
// Skip chars.
c = fgetc(f);
if (c == EOF)
{
goto tfrf;
}
c = 0;
while (c != ' ')
{
c = fgetc(f);
if (c == EOF)
{
goto tfrf;
}
}
if (fscanf(f, "%i", &(content->data_length)) < 1)
{
goto tfrf;
}
if (content->data_length > file_size)
{
ret = ERR_INVALID_FILE;
goto tfrf;
}
if (fseek(f, 0, SEEK_SET) < 0) goto tfrf;
content->data_part = (uint8_t *)g_malloc0(content->data_length);
if (content->data_part == NULL)
{
fclose(f);
tifiles_content_delete_flash(content);
return ERR_MALLOC;
}
content->next = NULL;
if(fread(content->data_part, 1, content->data_length, f) < content->data_length) goto tfrf;
fclose(f);
return 0;
tfrf: // release on exit
tifiles_critical("%s: error reading / understanding file %s", __FUNCTION__, filename);
fclose(f);
tfrf2:
tifiles_content_delete_flash(content);
return ret;
}
