Hi
Anyone good at how to read text files in BeOS/Haiku?
I'm trying to read one line at a time from a joystick description text
file (/boot/home/config/settings/joysticks).
I have some code that nearly works but not close enough as it contains
text that are not shown as text but square.
this is the code.
status_t
_BJoystickTweaker::get_info(_joystick_info* info, const char * ref)
{
CALLED();
LOG("ref = %s\n", ref);
LOG("============== Begin ==========\n");
status_t err = B_ERROR;
BString str(JOYSTICKPATH);
str.Append(ref);
LOG("Path = %s\n", str.String());
BFile file(str.String(), B_READ_ONLY);
if (file.InitCheck() == B_OK) {
str = "";
while (GetLine(&file, B_UNICODE_UTF8, str, true)) {
LOG("Path = %s\n", str.String());
if (str.IFindFirst("module") != -1) {
str.RemoveFirst("module = ");
str.RemoveAll("\"");
strncpy(info->module_name, str.String(), STRINGLENGTHCPY);
LOG("%s\n", str.String());
} else if (str.IFindFirst("gadget") != -1) {
str.RemoveFirst("gadget = ");
str.RemoveAll("\"");
strncpy(info->controller_name, str.String(), STRINGLENGTHCPY);
LOG("%s\n", str.String());
} else {
LOG("Path = %s\n", str.String());
}
}
}
LOG("============= End ===========\n");
err = B_OK;
return err;
}
bool
_BJoystickTweaker::GetLine(BFile *file, uint32 encoding, BString& str,
bool useConvertUTF8)
{
BString temp;
static char buffer[4096];
static off_t positionInBuffer;
static ssize_t amt_read;
str = ""; // Clear out old string
// Fill up the buffer with the first chunk of code
if (positionInBuffer == 0)
amt_read = file->Read(&buffer, sizeof(buffer));
while (amt_read > 0) {
while (positionInBuffer < amt_read) {
// Return true if we hit a newline or the end of the file
if (buffer[positionInBuffer] == '\n') {
positionInBuffer++;
//Convert begin
int32 state = 0;
int32 bufLen = str.Length();
int32 destBufLen = bufLen;
char dest[destBufLen];
if (useConvertUTF8)
convert_to_utf8(encoding, str.String(), &bufLen, dest, &destBufLen,
&state);
str = dest;
//Convert ends
return true;
}
str += buffer[positionInBuffer];
positionInBuffer++;
}
// Once the buffer runs out, grab some more and start again
amt_read = file->Read(&buffer, sizeof(buffer));
positionInBuffer = 0;
}
return false;
}
