integrate interactive command editing

1 files changed, 99 insertions, 0 deletions

diff --git a/shed_non_vi.c b/shed_non_vi.c
new file mode 100644
index 0000000..eda2cc6
--- /dev/null
+++ b/shed_non_vi.c
@@ -0,0 +1,99 @@
+#define _POSIX_C_SOURCE 200809L
+#include <ctype.h>
+#include <termios.h>
+#include <unistd.h>
+#include "shed.h"
+
+int shed_handle_non_vi(struct shed *e, struct termios *t, char c)
+{
+	if (c == t->c_cc[VEOF]) {
+		if (shed_eof(e) == 0) {
+			return 0;
+		}
+	}
+
+	if (c == t->c_cc[VINTR]) {
+		return shed_cancel(e);
+	}
+
+	if (c == t->c_cc[VEOL]) {
+		return shed_move_end(e);
+	}
+
+	if (c == t->c_cc[VERASE]) {
+		return shed_backspace(e);
+	}
+
+	if (c == t->c_cc[VQUIT]) {
+		/* ^\ */
+		return 1;
+	}
+
+	if (c == t->c_cc[VSTART]) {
+		/* ^Q */
+		return 1;
+	}
+
+	if (c == t->c_cc[VSTOP]) {
+		/* ^S */
+		return 1;
+	}
+
+	if (c == t->c_cc[VSUSP]) {
+		/* ^Z */
+		return 1;
+	}
+
+	if (c == '\033') {
+		char esc[2];
+		read(STDIN_FILENO, esc, 2);
+		if (esc[1] == 'C') {
+			return shed_move_forward(e);
+		}
+		if (esc[1] == 'D' && e->cur->pos > 0) {
+			return shed_move_backward(e);
+		}
+		return 1;
+	}
+
+	if (c == '\n') {
+		return shed_execute(e);
+	}
+
+	if (CTRL_A <= c && c <= CTRL_Z) {
+		switch (c) {
+		case CTRL_A:	return shed_move_0(e);
+		case CTRL_B:	return shed_move_backward(e);
+		case CTRL_C:	return shed_cancel(e);
+		case CTRL_D:	return shed_delete(e);
+		case CTRL_E:	return shed_move_end(e);
+		case CTRL_F:	return shed_move_forward(e);
+		case CTRL_G:	break; // return abort(e)?
+		case CTRL_H:	return shed_backspace(e);
+		case CTRL_I:	break; // return complete_wordexp(e);
+		case CTRL_J:	return shed_execute(e);
+		case CTRL_K:	return shed_delete_toend(e);
+		case CTRL_L:	return shed_redraw(e);
+		case CTRL_M:	return shed_execute(e);
+		case CTRL_N:	// return history_forward(e);
+		case CTRL_O:	// return ??? /* ??? */
+		case CTRL_P:	// return history_backward(e);
+		case CTRL_Q:	// /* TTY START */
+		case CTRL_R:	// return history_backsearch(e);
+		case CTRL_S:	// /* TTY STOP */
+		case CTRL_T:	break; // /* ??? */
+		case CTRL_U:	return shed_erase(e);
+		case CTRL_V:	break; // return quote(e);
+		case CTRL_W:	return shed_worderase(e);
+		case CTRL_X:	// /* ??? */
+		case CTRL_Y:	// /* ??? */
+		case CTRL_Z:	// /* ??? */
+			break;
+		}
+		return 1;
+	}
+
+	/* regular character */
+	shed_insert_char(e->cur, c);
+	return 1;
+}