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-rw-r--r--lib/interestingtimes.c56
1 files changed, 31 insertions, 25 deletions
diff --git a/lib/interestingtimes.c b/lib/interestingtimes.c
index 612d9d6e..70fd4f9b 100644
--- a/lib/interestingtimes.c
+++ b/lib/interestingtimes.c
@@ -46,31 +46,28 @@ int terminal_size(unsigned *xx, unsigned *yy)
return x || y;
}
-// Wrapper that parses results from ANSI probe. If block|2 query size and
-// send ANSI probe if we can't. (Probe queries xterm size through
-// serial connection, when local TTY doesn't know and only remote end knows.)
-// Otherwise acts like scan_key()
-int scan_key_getsize(char *scratch, int block, unsigned *xx, unsigned *yy)
+// Query terminal size, sending ANSI probe if necesary. (Probe queries xterm
+// size through serial connection, when local TTY doesn't know but remote does.)
+// Returns 0 if ANSI probe sent, 1 if size determined from tty or environment
+
+int terminal_probesize(unsigned *xx, unsigned *yy)
{
- int key;
+ if (terminal_size(xx, yy) && (!xx || *xx) && (!yy || *yy)) return 1;
- if (block&2) {
- struct pollfd pfd;
+ // Send probe: bookmark cursor position, jump to bottom right,
+ // query position, return cursor to bookmarked position.
+ xprintf("\e[s\e[999C\e[999B\e[6n\e[u");
- if (terminal_size(xx, yy)) {
- if (!(block&1)) return -2;
- } else {
- // Send probe: bookmark cursor position, jump to bottom right,
- // query position, return cursor to bookmarked position.
- xprintf("\e[s\e[999C\e[999B\e[6n\e[u");
+ return 0;
+}
- // Wait up to a quarter second for a result
- memset(&pfd, 0, sizeof(struct pollfd));
- pfd.events = POLLIN;
- xpoll(&pfd, 0, 250);
- }
- }
- while (512&(key = scan_key(scratch, block&1))) {
+// Wrapper that parses results from ANSI probe to update screensize.
+// Otherwise acts like scan_key()
+int scan_key_getsize(char *scratch, int miliwait, unsigned *xx, unsigned *yy)
+{
+ int key;
+
+ while (512&(key = scan_key(scratch, miliwait))) {
if (key<0) break;
if (xx) *xx = (key>>10)&1023;
if (yy) *yy = (key>>20)&1023;
@@ -120,20 +117,27 @@ struct scan_key_list {
{"UP", "\033[A"}, {"DOWN", "\033[B"}, {"RIGHT", "\033[C"}, {"LEFT", "\033[D"},
{"PGUP", "\033[5~"}, {"PGDN", "\033[6~"}, {"HOME", "\033OH"},
{"END", "\033OF"}, {"INSERT", "\033[2~"},
+
+ {"F1", "\033OP"}, {"F2", "\033OQ"}, {"F3", "\033OR"}, {"F4", "\033OS"},
+ {"F5", "\033[15~"}, {"F6", "\033[17~"}, {"F7", "\033[18~"},
+ {"F8", "\033[19~"}, {"F9", "\033[20~"},
+
{"SUP", "\033[1;2A"}, {"AUP", "\033[1;3A"}, {"CUP", "\033[1;5A"},
{"SDOWN", "\033[1;2B"}, {"ADOWN", "\033[1;3B"}, {"CDOWN", "\033[1;5B"},
{"SRIGHT", "\033[1;2C"}, {"ARIGHT", "\033[1;3C"}, {"CRIGHT", "\033[1;5C"},
- {"SLEFT", "\033[1;2D"}, {"ALEFT", "\033[1;3D"}, {"CLEFT", "\033[1;5D"}
+ {"SLEFT", "\033[1;2D"}, {"ALEFT", "\033[1;3D"}, {"CLEFT", "\033[1;5D"},
+ {"SF1", "\033O1;2P"}, {"AF1", "\033O1;3P"}, {"CF1", "\033[1;5P"}
);
// Scan stdin for a keypress, parsing known escape sequences
+// Blocks for miliwait miliseconds, none 0, forever if -1
// Returns: 0-255=literal, -1=EOF, -2=NONE, 256-...=index into scan_key_list
// >512 is x<<9+y<<21
// scratch space is necessary because last char of !seq could start new seq
// Zero out first byte of scratch before first call to scan_key
// block=0 allows fetching multiple characters before updating display
-int scan_key(char *scratch, int block)
+int scan_key(char *scratch, int miliwait)
{
struct pollfd pfd;
int maybe, i, j;
@@ -151,7 +155,8 @@ int scan_key(char *scratch, int block)
// Check for return from terminal size probe
memset(pos, 0, 6*sizeof(int));
- sscanf(scratch+1, "\033%n[%n%3u%n,%n%3u%nR%n", pos, pos+1, &y,
+ scratch[(1+*scratch)&15] = 0;
+ sscanf(scratch+1, "\033%n[%n%3u%n;%n%3u%nR%n", pos, pos+1, &y,
pos+2, pos+3, &x, pos+4, pos+5);
if (pos[5]) {
// Recognized X/Y position, consume and return
@@ -180,7 +185,8 @@ int scan_key(char *scratch, int block)
// Need more data to decide
// 30 miliseconds is about the gap between characters at 300 baud
- if (maybe || !block) if (!xpoll(&pfd, 1, 30*maybe)) break;
+ if (maybe || miliwait != -1)
+ if (!xpoll(&pfd, 1, maybe ? 30 : miliwait)) break;
// Read 1 byte so we don't overshoot sequence match. (We can deviate
// and fail to match, but match consumes entire buffer.)