void parse_config(char *filename, struct conf *conf) {
int conf_file = open(filename, O_RDONLY);
char buffer[DFINGER_BUFFER_SIZE];
memset(buffer, 0, DFINGER_BUFFER_SIZE);
char line[DFINGER_LINE_SIZE];
memset(line, 0, DFINGER_LINE_SIZE);
size_t blen = DFINGER_BUFFER_SIZE;
size_t boffset = 0;
size_t llen = DFINGER_LINE_SIZE;
int ret;
int num_read;
while ((num_read = read(conf_file, buffer, DFINGER_BUFFER_SIZE) > 0)) {
blen += num_read;
while ((ret = fetch_line(buffer, blen, &boffset, line, llen)) !=
RTL_WANT_MORE) {
switch (ret) {
case RTL_LINE_FETCHED:
set_option(line, conf);
break;
case RTL_BLANK_LINE:
break;
default:
return;
}
}
move_buffer(buffer, blen, &boffset);
}
close(conf_file);
}
STATIC struct buffer FAR *searchblock(ULONG blkno, COUNT dsk)
{
int fat_count = 0;
struct buffer FAR *bp;
size_t lastNonFat = 0;
size_t uncacheBuf = 0;
seg bufseg = FP_SEG(firstbuf);
size_t firstbp = FP_OFF(firstbuf);
#ifdef DISPLAY_GETBLOCK
printf("[searchblock %d, blk %ld, buf ", dsk, blkno);
#endif
/* Search through buffers to see if the required block */
/* is already in a buffer */
bp = MK_FP(bufseg, firstbp);
do
{
if ((bp->b_blkno == blkno) &&
(bp->b_flag & BFR_VALID) && (bp->b_unit == dsk))
{
/* found it -- rearrange LRU links */
#ifdef DISPLAY_GETBLOCK
printf("HIT %04x:%04x]\n", FP_SEG(bp), FP_OFF(bp));
#endif
bp->b_flag &= ~BFR_UNCACHE; /* reset uncache attribute */
if (FP_OFF(bp) != firstbp)
{
*(UWORD *)&firstbuf = FP_OFF(bp);
move_buffer(bp, firstbp);
}
return bp;
}
if (bp->b_flag & BFR_UNCACHE)
uncacheBuf = FP_OFF(bp);
if (bp->b_flag & BFR_FAT)
fat_count++;
else
lastNonFat = FP_OFF(bp);
bp = b_next(bp);
} while (FP_OFF(bp) != firstbp);
/*
now take either the last buffer in chain (not used recently)
or, if we are low on FAT buffers, the last non FAT buffer
*/
if (uncacheBuf)
{
bp = bufptr(uncacheBuf);
}
else if (bp->b_flag & BFR_FAT && fat_count < 3 && lastNonFat)
{
bp = bufptr(lastNonFat);
}
else
{
bp = b_prev(bufptr(firstbp));
}
bp->b_flag |= BFR_UNCACHE; /* set uncache attribute */
#ifdef DISPLAY_GETBLOCK
printf("MISS, replace %04x:%04x]\n", FP_SEG(bp), FP_OFF(bp));
#endif
if (FP_OFF(bp) != firstbp) /* move to front */
{
move_buffer(bp, firstbp);
*(UWORD *)&firstbuf = FP_OFF(bp);
}
return bp;
}
/**
* @brief Newlib hook to allow printf/iprintf to appear on console
*
* @param[in] buf
* Pointer to data buffer containing the data to write
* @param[in] len
* Length of data in bytes expected to be written
*
* @return Number of bytes written
*/
static int __console_write( char *buf, unsigned int len )
{
int pos = strlen(render_buffer);
/* Copy over to screen buffer */
for(int x = 0; x < len; x++)
{
if(pos == CONSOLE_WIDTH * CONSOLE_HEIGHT)
{
/* Need to scroll the buffer */
move_buffer();
}
switch(buf[x])
{
case '\r':
case '\n':
/* Add enough space to get to next line */
if(!(pos % CONSOLE_WIDTH))
{
render_buffer[pos++] = ' ';
}
while(pos % CONSOLE_WIDTH)
{
render_buffer[pos++] = ' ';
}
/* Make sure we don't run down the end */
if(pos == CONSOLE_WIDTH * CONSOLE_HEIGHT)
{
move_buffer();
}
break;
case '\t':
/* Add enough spaces to go to the next tab stop */
if(!(pos % TAB_WIDTH))
{
render_buffer[pos++] = ' ';
}
while(pos % TAB_WIDTH)
{
render_buffer[pos++] = ' ';
}
/* Make sure we don't run down the end */
if(pos == CONSOLE_WIDTH * CONSOLE_HEIGHT)
{
move_buffer();
}
break;
default:
/* Copy character over */
render_buffer[pos++] = buf[x];
break;
}
}
/* Cap off the end! */
render_buffer[pos] = 0;
/* Out to screen! */
if(render_now == RENDER_AUTOMATIC)
{
__console_render();
}
/* Always write all */
return len;
}
