void screen_prev_line(struct te_buffer *buf)
{
if (buf == NULL)
return;
if (buf->y > 0) {
buf->y--;
buf->x = screen_line_length(buf->contents, buf->point);
} else {
if (bstrrchrp(buf->contents, '\n', buf->point) == BSTR_ERR) /* is it the first line of the file ? */
return;
scroll_down(buffer_win);
bstring s = current_line_as_bstring(buf->contents, buf->point - 1);
draw_line(s, 0);
bdestroy(s);
/* update buf->top_char */
s = current_line_as_bstring(buf->contents, buf->top_char);
buf->top_char -= blength(s);
buf->top_char = max(buf->top_char, 0);
bdestroy(s);
}
}
void Parse_print_error(const char *message, bstring content, int at, int line_number)
{
int prev_nl = bstrrchrp(content, '\n', at);
int next_nl = bstrchrp(content, '\n', at);
if(prev_nl < 0) {
log_err("%s AT '%c' on line %d:\n%.*s\n%*s", message,
bchar(content, at), line_number-1,
next_nl, bdata(content),
at, "^");
} else {
log_err("%s AT '%c' on line %d:%.*s\n%*s", message,
bchar(content, at), line_number,
next_nl - prev_nl, bdataofs(content, prev_nl),
at - prev_nl, "^");
}
}