scew_bool
buffer_end_ (scew_reader *reader)
{
scew_reader_buffer *buf_reader = NULL;
assert (reader != NULL);
buf_reader = scew_reader_data (reader);
return (buf_reader->current >= buf_reader->size);
}
scew_bool
file_error_ (scew_reader *reader)
{
scew_reader_fp *fp_reader = NULL;
assert (reader != NULL);
fp_reader = scew_reader_data (reader);
return (ferror (fp_reader->file) != 0);
}
void
file_free_ (scew_reader *reader)
{
scew_reader_fp *fp_reader = NULL;
assert (reader != NULL);
/* Close the file before freeing the reader. */
file_close_ (reader);
fp_reader = scew_reader_data (reader);
free (fp_reader);
}
void
buffer_free_ (scew_reader *reader)
{
scew_reader_buffer *buf_reader = NULL;
assert (reader != NULL);
/* Close the buffer before freeing the reader. */
buffer_close_ (reader);
buf_reader = scew_reader_data (reader);
free (buf_reader);
}
scew_bool
buffer_close_ (scew_reader *reader)
{
scew_reader_buffer *buf_reader = NULL;
assert (reader != NULL);
buf_reader = scew_reader_data (reader);
/* This will mark it as EOR. */
buf_reader->current = buf_reader->size;
return SCEW_TRUE;
}
size_t
file_read_ (scew_reader *reader, XML_Char *buffer, size_t char_no)
{
size_t read_no = 0;
scew_reader_fp *fp_reader = NULL;
assert (reader != NULL);
assert (buffer != NULL);
fp_reader = scew_reader_data (reader);
read_no = fread (buffer, sizeof (XML_Char), char_no, fp_reader->file);
buffer[read_no] = _XT('\0');
return read_no;
}
scew_bool
file_end_ (scew_reader *reader)
{
scew_bool closed = SCEW_FALSE;
scew_reader_fp *fp_reader = NULL;
assert (reader != NULL);
fp_reader = scew_reader_data (reader);
/* If file is already closed, return true as well. */
closed = fp_reader->closed;
if (!closed)
{
/* Check end of file. */
int end = feof (fp_reader->file);
closed = ((-1 == end) || (end != 0)) ? SCEW_TRUE : SCEW_FALSE;
}
return closed;
}
size_t
buffer_read_ (scew_reader *reader, XML_Char *buffer, size_t char_no)
{
size_t read_no = 0;
size_t maxlen = 0;
scew_reader_buffer *buf_reader = NULL;
assert (reader != NULL);
assert (buffer != NULL);
buf_reader = scew_reader_data (reader);
/* Get maximum number of available bytes in buffer. */
maxlen = buf_reader->size - buf_reader->current;
read_no = (char_no > maxlen) ? maxlen : char_no;
scew_memcpy (buffer, buf_reader->buffer + buf_reader->current, read_no);
buf_reader->current += read_no;
return read_no;
}
scew_bool
file_close_ (scew_reader *reader)
{
int status = 0;
scew_reader_fp *fp_reader = NULL;
assert (reader != NULL);
fp_reader = scew_reader_data (reader);
/* Do not close already closed file or standard input stream. */
if (fp_reader->closed || (stdin == fp_reader->file))
{
fp_reader->closed = SCEW_TRUE;
}
else
{
/* Set closed flag if we are actually able to close it. */
status = fclose (fp_reader->file);
fp_reader->closed = (0 == status);
}
return fp_reader->closed;
}
