1 files changed, 245 insertions, 0 deletions

diff --git a/sway/commands/bind.c b/sway/commands/bind.c
new file mode 100644
index 00000000..79121404
--- /dev/null
+++ b/sway/commands/bind.c
@@ -0,0 +1,245 @@
+#ifdef __linux__
+#include <linux/input-event-codes.h>
+#elif __FreeBSD__
+#include <dev/evdev/input-event-codes.h>
+#endif
+#include <xkbcommon/xkbcommon.h>
+#include <xkbcommon/xkbcommon-names.h>
+#include <strings.h>
+#include "sway/commands.h"
+#include "sway/config.h"
+#include "list.h"
+#include "log.h"
+#include "stringop.h"
+#include "util.h"
+
+int binding_order = 0;
+
+void free_sway_binding(struct sway_binding *binding) {
+        if (!binding) {
+                return;
+        }
+
+        if (binding->keys) {
+                free_flat_list(binding->keys);
+        }
+        free(binding->command);
+        free(binding);
+}
+
+/**
+ * Returns true if the bindings have the same key and modifier combinations.
+ * Note that keyboard layout is not considered, so the bindings might actually
+ * not be equivalent on some layouts.
+ */
+bool binding_key_compare(struct sway_binding *binding_a,
+                struct sway_binding *binding_b) {
+        if (binding_a->release != binding_b->release) {
+                return false;
+        }
+
+        if (binding_a->bindcode != binding_b->bindcode) {
+                return false;
+        }
+
+        if (binding_a->modifiers ^ binding_b->modifiers) {
+                return false;
+        }
+
+        if (binding_a->keys->length != binding_b->keys->length) {
+                return false;
+        }
+
+        int keys_len = binding_a->keys->length;
+        for (int i = 0; i < keys_len; ++i) {
+                uint32_t key_a = *(uint32_t*)binding_a->keys->items[i];
+                bool found = false;
+                for (int j = 0; j < keys_len; ++j) {
+                        uint32_t key_b = *(uint32_t*)binding_b->keys->items[j];
+                        if (key_b == key_a) {
+                                found = true;
+                                break;
+                        }
+                }
+                if (!found) {
+                        return false;
+                }
+        }
+
+        return true;
+}
+
+struct cmd_results *cmd_bindsym(int argc, char **argv) {
+        struct cmd_results *error = NULL;
+        if ((error = checkarg(argc, "bindsym", EXPECTED_MORE_THAN, 1))) {
+                return error;
+        }
+
+        struct sway_binding *binding = calloc(1, sizeof(struct sway_binding));
+        if (!binding) {
+                return cmd_results_new(CMD_FAILURE, "bindsym",
+                                "Unable to allocate binding");
+        }
+        binding->keys = create_list();
+        binding->modifiers = 0;
+        binding->release = false;
+        binding->bindcode = false;
+
+        // Handle --release
+        if (strcmp("--release", argv[0]) == 0) {
+                if (argc >= 3) {
+                        binding->release = true;
+                        argv++;
+                        argc--;
+                } else {
+                        free_sway_binding(binding);
+                        return cmd_results_new(CMD_FAILURE, "bindsym",
+                                "Invalid bindsym command "
+                                "(expected more than 2 arguments, got %d)", argc);
+                }
+        }
+
+        binding->command = join_args(argv + 1, argc - 1);
+
+        list_t *split = split_string(argv[0], "+");
+        for (int i = 0; i < split->length; ++i) {
+                // Check for a modifier key
+                uint32_t mod;
+                if ((mod = get_modifier_mask_by_name(split->items[i])) > 0) {
+                        binding->modifiers |= mod;
+                        continue;
+                }
+                // Check for xkb key
+                xkb_keysym_t sym = xkb_keysym_from_name(split->items[i],
+                                XKB_KEYSYM_CASE_INSENSITIVE);
+
+                // Check for mouse binding
+                if (strncasecmp(split->items[i], "button", strlen("button")) == 0 &&
+                                strlen(split->items[i]) == strlen("button0")) {
+                        sym = ((char *)split->items[i])[strlen("button")] - '1' + BTN_LEFT;
+                }
+                if (!sym) {
+                        struct cmd_results *ret = cmd_results_new(CMD_INVALID, "bindsym",
+                                        "Unknown key '%s'", (char *)split->items[i]);
+                        free_sway_binding(binding);
+                        free_flat_list(split);
+                        return ret;
+                }
+                xkb_keysym_t *key = calloc(1, sizeof(xkb_keysym_t));
+                if (!key) {
+                        free_sway_binding(binding);
+                        free_flat_list(split);
+                        return cmd_results_new(CMD_FAILURE, "bindsym",
+                                        "Unable to allocate binding");
+                }
+                *key = sym;
+                list_add(binding->keys, key);
+        }
+        free_flat_list(split);
+        binding->order = binding_order++;
+
+        list_t *mode_bindings = config->current_mode->keysym_bindings;
+
+        // overwrite the binding if it already exists
+        bool overwritten = false;
+        for (int i = 0; i < mode_bindings->length; ++i) {
+                struct sway_binding *config_binding = mode_bindings->items[i];
+                if (binding_key_compare(binding, config_binding)) {
+                        sway_log(L_DEBUG, "overwriting old binding with command '%s'",
+                                config_binding->command);
+                        free_sway_binding(config_binding);
+                        mode_bindings->items[i] = binding;
+                        overwritten = true;
+                }
+        }
+
+        if (!overwritten) {
+                list_add(mode_bindings, binding);
+        }
+
+        sway_log(L_DEBUG, "bindsym - Bound %s to command %s",
+                argv[0], binding->command);
+        return cmd_results_new(CMD_SUCCESS, NULL, NULL);
+}
+
+struct cmd_results *cmd_bindcode(int argc, char **argv) {
+        struct cmd_results *error = NULL;
+        if ((error = checkarg(argc, "bindcode", EXPECTED_MORE_THAN, 1))) {
+                return error;
+        }
+
+        struct sway_binding *binding = calloc(1, sizeof(struct sway_binding));
+        if (!binding) {
+                return cmd_results_new(CMD_FAILURE, "bindsym",
+                                "Unable to allocate binding");
+        }
+        binding->keys = create_list();
+        binding->modifiers = 0;
+        binding->release = false;
+        binding->bindcode = true;
+
+        // Handle --release
+        if (strcmp("--release", argv[0]) == 0) {
+                if (argc >= 3) {
+                        binding->release = true;
+                        argv++;
+                        argc--;
+                } else {
+                        free_sway_binding(binding);
+                        return cmd_results_new(CMD_FAILURE, "bindcode",
+                                "Invalid bindcode command "
+                                "(expected more than 2 arguments, got %d)", argc);
+                }
+        }
+
+        binding->command = join_args(argv + 1, argc - 1);
+
+        list_t *split = split_string(argv[0], "+");
+        for (int i = 0; i < split->length; ++i) {
+                // Check for a modifier key
+                uint32_t mod;
+                if ((mod = get_modifier_mask_by_name(split->items[i])) > 0) {
+                        binding->modifiers |= mod;
+                        continue;
+                }
+                // parse keycode
+                xkb_keycode_t keycode = (int)strtol(split->items[i], NULL, 10);
+                if (!xkb_keycode_is_legal_ext(keycode)) {
+                        error =
+                                cmd_results_new(CMD_INVALID, "bindcode",
+                                        "Invalid keycode '%s'", (char *)split->items[i]);
+                        free_sway_binding(binding);
+                        list_free(split);
+                        return error;
+                }
+                xkb_keycode_t *key = calloc(1, sizeof(xkb_keycode_t));
+                *key = keycode - 8;
+                list_add(binding->keys, key);
+        }
+        free_flat_list(split);
+
+        binding->order = binding_order++;
+
+        list_t *mode_bindings = config->current_mode->keycode_bindings;
+
+        // overwrite the binding if it already exists
+        bool overwritten = false;
+        for (int i = 0; i < mode_bindings->length; ++i) {
+                struct sway_binding *config_binding = mode_bindings->items[i];
+                if (binding_key_compare(binding, config_binding)) {
+                        sway_log(L_DEBUG, "overwriting old binding with command '%s'",
+                                config_binding->command);
+                        free_sway_binding(config_binding);
+                        mode_bindings->items[i] = binding;
+                        overwritten = true;
+                }
+        }
+
+        if (!overwritten) {
+                list_add(mode_bindings, binding);
+        }
+
+        sway_log(L_DEBUG, "bindcode - Bound %s to command %s",
+                argv[0], binding->command);
+        return cmd_results_new(CMD_SUCCESS, NULL, NULL);
+}