Commit cdffa326 authored by Paul Sokolovsky's avatar Paul Sokolovsky
Browse files

stmhal readline: Parse XTERM Home/End key codes.

Which are ESC O H, ESC O F.
parent c3936842
...@@ -15,6 +15,8 @@ ...@@ -15,6 +15,8 @@
static const char *readline_hist[READLINE_HIST_SIZE] = {NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL}; static const char *readline_hist[READLINE_HIST_SIZE] = {NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL};
enum { ESC_PLAIN = 1, ESC_BRACKET, ESC_BRACKET_DIGIT, ESC_O };
void readline_init(void) { void readline_init(void) {
memset(readline_hist, 0, READLINE_HIST_SIZE * sizeof(const char*)); memset(readline_hist, 0, READLINE_HIST_SIZE * sizeof(const char*));
} }
...@@ -64,7 +66,7 @@ int readline(vstr_t *line, const char *prompt) { ...@@ -64,7 +66,7 @@ int readline(vstr_t *line, const char *prompt) {
return 0; return 0;
} else if (c == 27) { } else if (c == 27) {
// escape sequence // escape sequence
escape_seq = 1; escape_seq = ESC_PLAIN;
} else if (c == 8 || c == 127) { } else if (c == 8 || c == 127) {
// backspace/delete // backspace/delete
if (cursor_pos > orig_line_len) { if (cursor_pos > orig_line_len) {
...@@ -80,15 +82,20 @@ int readline(vstr_t *line, const char *prompt) { ...@@ -80,15 +82,20 @@ int readline(vstr_t *line, const char *prompt) {
redraw_from_cursor = true; redraw_from_cursor = true;
redraw_step_forward = 1; redraw_step_forward = 1;
} }
} else if (escape_seq == 1) { } else if (escape_seq == ESC_PLAIN) {
if (c == '[') { switch (c) {
escape_seq = 2; case '[':
} else { escape_seq = ESC_BRACKET;
escape_seq = 0; break;
case 'O':
escape_seq = ESC_O;
break;
default:
escape_seq = 0;
} }
} else if (escape_seq == 2) { } else if (escape_seq == ESC_BRACKET) {
if ('0' <= c && c <= '9') { if ('0' <= c && c <= '9') {
escape_seq = 3; escape_seq = ESC_BRACKET_DIGIT;
escape_seq_buf[0] = c; escape_seq_buf[0] = c;
} else { } else {
escape_seq = 0; escape_seq = 0;
...@@ -132,17 +139,26 @@ int readline(vstr_t *line, const char *prompt) { ...@@ -132,17 +139,26 @@ int readline(vstr_t *line, const char *prompt) {
} }
} }
} }
} else if (escape_seq == 3) { } else if (escape_seq == ESC_BRACKET_DIGIT) {
escape_seq = 0;
if (c == '~') { if (c == '~') {
if (escape_seq_buf[0] == '1' || escape_seq_buf[0] == '7') { if (escape_seq_buf[0] == '1' || escape_seq_buf[0] == '7') {
// home key home_key:
redraw_step_back = cursor_pos - orig_line_len; redraw_step_back = cursor_pos - orig_line_len;
} else if (escape_seq_buf[0] == '4' || escape_seq_buf[0] == '8') { } else if (escape_seq_buf[0] == '4' || escape_seq_buf[0] == '8') {
// end key end_key:
redraw_step_forward = line->len - cursor_pos; redraw_step_forward = line->len - cursor_pos;
} }
} }
escape_seq = 0;
} else if (escape_seq == ESC_O) {
switch (c) {
case 'H':
goto home_key;
case 'F':
goto end_key;
default:
escape_seq = 0;
}
} else { } else {
escape_seq = 0; escape_seq = 0;
} }
......
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