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Allow forwards though input history

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This commit is contained in:
James Booth
2012-02-27 00:48:55 +00:00
parent 2379ae895f
commit 8f48685930
3 changed files with 36 additions and 8 deletions
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27
input_buffer.c
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@@ -26,12 +26,12 @@
static char *_inp_buf[BUFMAX];
static int _buf_size;
static int _buf_prev;
static int _buf_pos;
void inpbuf_init(void)
{
_buf_size = 0;
_buf_prev = -1;
_buf_pos = -1;
}
void inpbuf_append(char *inp)
@@ -39,16 +39,31 @@ void inpbuf_append(char *inp)
if (_buf_size < BUFMAX) {
_inp_buf[_buf_size] = (char*) malloc(strlen(inp) * sizeof(char));
strcpy(_inp_buf[_buf_size], inp);
_buf_prev = _buf_size;
_buf_pos = _buf_size;
_buf_size++;
}
}
char *inpbuf_get_previous(void)
char *inpbuf_previous(void)
{
if (_buf_size == 0 || _buf_prev == -1)
if (_buf_size == 0 || _buf_pos == -1)
return NULL;
return _inp_buf[_buf_prev--];
return _inp_buf[_buf_pos--];
}
char *inpbuf_next(void)
{
if (_buf_size == 0)
return NULL;
if (_buf_pos == (_buf_size - 1))
return NULL;
if (_buf_pos + 2 >= _buf_size)
return NULL;
int pos = _buf_pos + 2;
_buf_pos++;
return _inp_buf[pos];
}