1 files changed, 57 insertions, 0 deletions

diff --git a/swaylock/password.c b/swaylock/password.c
new file mode 100644
index 00000000..da67205d
--- /dev/null
+++ b/swaylock/password.c
@@ -0,0 +1,57 @@
+#include <assert.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <wlr/util/log.h>
+#include <xkbcommon/xkbcommon.h>
+#include "swaylock/swaylock.h"
+#include "swaylock/seat.h"
+#include "unicode.h"
+
+static void backspace(struct swaylock_password *pw) {
+        if (pw->len != 0) {
+                pw->buffer[--pw->len] = 0;
+        }
+}
+
+static void append_ch(struct swaylock_password *pw, uint32_t codepoint) {
+        if (!pw->buffer) {
+                pw->size = 8;
+                if (!(pw->buffer = malloc(pw->size))) {
+                        // TODO: Display error
+                        return;
+                }
+                pw->buffer[0] = 0;
+        }
+        size_t utf8_size = utf8_chsize(codepoint);
+        if (pw->len + utf8_size + 1 >= pw->size) {
+                size_t size = pw->size * 2;
+                char *buffer = realloc(pw->buffer, size);
+                if (!buffer) {
+                        // TODO: Display error
+                        return;
+                }
+                pw->size = size;
+                pw->buffer = buffer;
+        }
+        utf8_encode(&pw->buffer[pw->len], codepoint);
+        pw->buffer[pw->len + utf8_size] = 0;
+        pw->len += utf8_size;
+}
+
+void swaylock_handle_key(struct swaylock_state *state,
+                xkb_keysym_t keysym, uint32_t codepoint) {
+        switch (keysym) {
+                case XKB_KEY_KP_Enter: /* fallthrough */
+                case XKB_KEY_Return:
+                        // TODO: Attempt password
+                        break;
+                case XKB_KEY_BackSpace:
+                        backspace(&state->password);
+                        break;
+                default:
+                        if (codepoint) {
+                                append_ch(&state->password, codepoint);
+                        }
+                        break;
+        }
+}