svn_rev_643

structure cleanup

1 files changed, 58 insertions, 0 deletions

diff --git a/lib/readkey.c b/lib/readkey.c
new file mode 100644
index 0000000000..d4e86ed3eb
--- /dev/null
+++ b/lib/readkey.c
@@ -0,0 +1,58 @@
+
+#include <common.h>
+#include <linux/ctype.h>
+#include <readkey.h>
+
+struct esc_cmds {
+	const char *seq;
+	char val;
+};
+
+static const struct esc_cmds esccmds[] = {
+	{"OA", KEY_UP},       // cursor key Up
+	{"OB", KEY_DOWN},     // cursor key Down
+	{"OC", KEY_RIGHT},    // Cursor Key Right
+	{"OD", KEY_LEFT},     // cursor key Left
+	{"OH", KEY_HOME},     // Cursor Key Home
+	{"OF", KEY_END},      // Cursor Key End
+	{"[A", KEY_UP},       // cursor key Up
+	{"[B", KEY_DOWN},     // cursor key Down
+	{"[C", KEY_RIGHT},    // Cursor Key Right
+	{"[D", KEY_LEFT},     // cursor key Left
+	{"[H", KEY_HOME},     // Cursor Key Home
+	{"[F", KEY_END},      // Cursor Key End
+	{"[1~", KEY_HOME},    // Cursor Key Home
+	{"[2~", KEY_INSERT},  // Cursor Key Insert
+	{"[3~", KEY_DEL},     // Cursor Key Delete
+	{"[4~", KEY_END},     // Cursor Key End
+	{"[5~", KEY_PAGEUP},  // Cursor Key Page Up
+	{"[6~", KEY_PAGEDOWN},// Cursor Key Page Down
+};
+
+char read_key(void)
+{
+	char c;
+	char esc[5];
+	c = getc();
+
+	if (c == 27) {
+		int i = 0;
+		esc[i++] = getc();
+		esc[i++] = getc();
+		if (isdigit(esc[1])) {
+			while(1) {
+				esc[i] = getc();
+				if (esc[i++] == '~')
+					break;
+			}
+		}
+		esc[i] = 0;
+		for (i = 0; i < 18; i++){
+			if (!strcmp(esc, esccmds[i].seq))
+				return esccmds[i].val;
+		}
+		return -1;
+	}
+	return c;
+}
+