int ConsoleData::getLineReverse(char *s, int max_len, int line_count) {
int buf_ptr = getLineStartReverse(line_count);
int cur_len = 0;
if ((s == NULL) || (buf_ptr < 0)) {
return -1;
}
while ((buf_ptr != head_ptr) && (max_len > 1)) {
if (data[buf_ptr] && data[buf_ptr] != '\n') {
*s = data[buf_ptr];
s++; max_len--;
cur_len++;
}
if (data[buf_ptr] == 0) {
/* end of this line */
*s = 0;
return cur_len;
}
buf_ptr = bufWrap(buf_ptr + 1);
}
*s = 0;
return (cur_len);
}
void ConsoleData::gobbleLine(void) {
int last_char_lf = 0;
while ( (tail_ptr != head_ptr) && (!last_char_lf)) {
if (data[tail_ptr] == 0) {
last_char_lf = 1;
cur_numlines--;
}
tail_ptr = bufWrap(tail_ptr + 1);
}
}
void ConsoleData::addChar(char c) {
if (c == '\r') {
/* don't insert CR */
return;
} else if (c == '\n') {
/* insert newlines as string terminators */
c = 0;
cur_numlines++;
}
if (spaceInBuf() < 1) {
this->gobbleLine();
}
this->data[this->head_ptr] = c;
this->head_ptr = bufWrap(this->head_ptr + 1);
this->data[this->head_ptr] = 0; /* guarantee a string terminator */
}
int ConsoleData::getLineStartReverse(int count) {
int line_start = -1;
int curpos = head_ptr;
int skiplast=1;
while ((curpos != tail_ptr) && (count)) {
curpos = bufWrap(curpos-1);
if ((!skiplast) && (data[curpos] == 0)) {
count--;
if (count == 0) {
return line_start;
}
}
skiplast = 0;
line_start = curpos;
}
if (count == 1) {
return line_start;
} else {
return -1;
}
}
err_t queueAppend(queue_t *q, const unsigned char *p) {
return bufAppend(&q->buf, bufWrap((void *)(uintptr_t)p, q->itemSize));
}
