int tty_read_section(int fd, char *buf, char stop_char, int timeout, int *nbytes_read)
{
if (fd == -1)
return TTY_ERRNO;
int bytesRead = 0;
int err = TTY_OK;
*nbytes_read = 0;
for (;;)
{
if ( (err = tty_timeout(fd, timeout)) )
return err;
bytesRead = read(fd, buf, 1);
if (bytesRead < 0 )
return TTY_READ_ERROR;
if (bytesRead)
(*nbytes_read)++;
if (*buf == stop_char)
return TTY_OK;
buf += bytesRead;
}
return TTY_TIME_OUT;
}
int tty_read(int fd, char *buf, int nbytes, int timeout, int *nbytes_read)
{
if (fd == -1)
return TTY_ERRNO;
int bytesRead = 0;
int err = 0;
*nbytes_read =0;
if (nbytes <=0)
return TTY_PARAM_ERROR;
while (nbytes > 0)
{
if ( (err = tty_timeout(fd, timeout)) )
return err;
bytesRead = read(fd, buf, ((unsigned) nbytes));
if (bytesRead < 0 )
return TTY_READ_ERROR;
buf += bytesRead;
*nbytes_read += bytesRead;
nbytes -= bytesRead;
}
return TTY_OK;
}
int tty_nread_section(int fd, char *buf, int nsize, char stop_char, int timeout, int *nbytes_read)
{
#ifdef _WIN32
return TTY_ERRNO;
#else
if (fd == -1)
return TTY_ERRNO;
int bytesRead = 0;
int err = TTY_OK;
*nbytes_read = 0;
uint8_t *read_char = 0;
if (tty_debug)
IDLog("%s: Request to read until stop char '%#02X' with %d timeout for fd %d\n", __FUNCTION__, stop_char, timeout, fd);
for (;;)
{
if ((err = tty_timeout(fd, timeout)))
return err;
read_char = (uint8_t*)(buf + *nbytes_read);
bytesRead = read(fd, read_char, 1);
if (bytesRead < 0)
return TTY_READ_ERROR;
if (tty_debug)
IDLog("%s: buffer[%d]=%#X (%c)\n", __FUNCTION__, (*nbytes_read), *read_char, *read_char);
(*nbytes_read)++;
if (*read_char == stop_char)
return TTY_OK;
else if (*nbytes_read >= nsize)
return TTY_OVERFLOW;
}
return TTY_TIME_OUT;
#endif
}
int tty_read_section(int fd, char *buf, char stop_char, int timeout, int *nbytes_read)
{
#ifdef _WIN32
return TTY_ERRNO;
#else
char readBuffer[257]={0};
if (fd == -1)
return TTY_ERRNO;
int bytesRead = 0;
int err = TTY_OK;
*nbytes_read = 0;
uint8_t *read_char = 0;
if (tty_debug)
IDLog("%s: Request to read until stop char '%#02X' with %d timeout for fd %d\n", __FUNCTION__, stop_char, timeout, fd);
if (ttyGeminiUdpFormat)
{
bytesRead = read(fd, readBuffer, 255);
if (bytesRead < 0)
return TTY_READ_ERROR;
int *intSizedBuffer = (int *)readBuffer;
if (intSizedBuffer[0] != sequenceNumber)
{
// Not the right reply just do the read again.
return tty_read_section(fd, buf, stop_char, timeout, nbytes_read);
}
for (int index = 8; index < bytesRead; index++)
{
(*nbytes_read)++;
if (*(readBuffer+index) == stop_char)
{
strncpy(buf, readBuffer+8, *nbytes_read);
return TTY_OK;
}
}
}
else
{
for (;;)
{
if ((err = tty_timeout(fd, timeout)))
return err;
read_char = (uint8_t*)(buf + *nbytes_read);
bytesRead = read(fd, read_char, 1);
if (bytesRead < 0)
return TTY_READ_ERROR;
if (tty_debug)
IDLog("%s: buffer[%d]=%#X (%c)\n", __FUNCTION__, (*nbytes_read), *read_char, *read_char);
(*nbytes_read)++;
if (*read_char == stop_char)
return TTY_OK;
}
}
return TTY_TIME_OUT;
#endif
}
int tty_read(int fd, char *buf, int nbytes, int timeout, int *nbytes_read)
{
#ifdef _WIN32
return TTY_ERRNO;
#else
if (fd == -1)
return TTY_ERRNO;
int numBytesToRead = nbytes;
int bytesRead = 0;
int err = 0;
*nbytes_read = 0;
if (nbytes <= 0)
return TTY_PARAM_ERROR;
if (tty_debug)
IDLog("%s: Request to read %d bytes with %d timeout for fd %d\n", __FUNCTION__, nbytes, timeout, fd);
char geminiBuffer[257]={0};
char* buffer = buf;
if (ttyGeminiUdpFormat)
{
numBytesToRead = nbytes + 8;
buffer = geminiBuffer;
}
while (numBytesToRead > 0)
{
if ((err = tty_timeout(fd, timeout)))
return err;
bytesRead = read(fd, buffer + (*nbytes_read), ((uint32_t)numBytesToRead));
if (bytesRead < 0)
return TTY_READ_ERROR;
if (tty_debug)
{
IDLog("%d bytes read and %d bytes remaining...\n", bytesRead, numBytesToRead - bytesRead);
int i = 0;
for (i = *nbytes_read; i < (*nbytes_read + bytesRead); i++)
IDLog("%s: buffer[%d]=%#X (%c)\n", __FUNCTION__, i, (unsigned char)buf[i], buf[i]);
}
*nbytes_read += bytesRead;
numBytesToRead -= bytesRead;
}
if (ttyGeminiUdpFormat)
{
int *intSizedBuffer = (int *)geminiBuffer;
if (intSizedBuffer[0] != sequenceNumber)
{
// Not the right reply just do the read again.
return tty_read(fd, buf, nbytes, timeout, nbytes_read);
}
*nbytes_read -= 8;
memcpy(buf, geminiBuffer+8, *nbytes_read);
}
return TTY_OK;
#endif
}
