vi: discover window size even on serial consoles. optional
function old new delta
edit_file 671 761 +90
wh_helper - 57 +57
query_screen_dimensions 54 63 +9
ar_main 533 542 +9
refresh 767 773 +6
vi_main 242 243 +1
text_yank 56 54 -2
get_terminal_width_height 180 135 -45
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(add/remove: 1/0 grow/shrink: 5/2 up/down: 172/-47) Total: 125 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/editors/vi.c b/editors/vi.c
index f925984..d3a35e7 100644
--- a/editors/vi.c
+++ b/editors/vi.c
@@ -138,6 +138,9 @@
int save_argc; // how many file names on cmd line
int cmdcnt; // repetition count
unsigned rows, columns; // the terminal screen is this size
+#if ENABLE_FEATURE_VI_ASK_TERMINAL
+ int get_rowcol_error;
+#endif
int crow, ccol; // cursor is on Crow x Ccol
int offset; // chars scrolled off the screen to the left
int have_status_msg; // is default edit status needed?
@@ -503,7 +506,11 @@
#if ENABLE_FEATURE_VI_WIN_RESIZE
static void query_screen_dimensions(void)
{
- get_terminal_width_height(STDIN_FILENO, &columns, &rows);
+# if ENABLE_FEATURE_VI_ASK_TERMINAL
+ if (!G.get_rowcol_error)
+ G.get_rowcol_error =
+# endif
+ get_terminal_width_height(STDIN_FILENO, &columns, &rows);
if (rows > MAX_SCR_ROWS)
rows = MAX_SCR_ROWS;
if (columns > MAX_SCR_COLS)
@@ -530,6 +537,20 @@
columns = 80;
size = 0;
query_screen_dimensions();
+#if ENABLE_FEATURE_VI_ASK_TERMINAL
+ if (G.get_rowcol_error /* TODO? && no input on stdin */) {
+ uint64_t k;
+ write1("\033[999;999H" "\033[6n");
+ fflush_all();
+ k = read_key(STDIN_FILENO, readbuffer, /*timeout_ms:*/ 100);
+ if ((int32_t)k == KEYCODE_CURSOR_POS) {
+ uint32_t rc = (k >> 32);
+ columns = (rc & 0x7fff);
+ rows = ((rc >> 16) & 0x7fff);
+ }
+ query_screen_dimensions();
+ }
+#endif
new_screen(rows, columns); // get memory for virtual screen
init_text_buffer(fn);