*
* See file LICENSE for license information.
*
+ * src/config.c: Contains all functions handling the configuration file (calling
+ * the parser (src/cfgparse.y) with the correct path, switching key bindings
+ * mode).
+ *
*/
#include <stdio.h>
#include <string.h>
#include <sys/stat.h>
+#include <sys/types.h>
#include <stdlib.h>
#include <glob.h>
+#include <unistd.h>
+
+/* We need Xlib for XStringToKeysym */
+#include <X11/Xlib.h>
+
+#include <xcb/xcb_keysyms.h>
#include "i3.h"
#include "util.h"
#include "config.h"
+#include "xcb.h"
+#include "table.h"
+#include "workspace.h"
+#include "log.h"
Config config;
+struct modes_head modes;
/*
* This function resolves ~ in pathnames.
*
*/
static char *glob_path(const char *path) {
- static glob_t globbuf;
- if (glob(path, GLOB_NOCHECK | GLOB_TILDE, NULL, &globbuf) < 0)
- die("glob() failed");
- char *result = sstrdup(globbuf.gl_pathc > 0 ? globbuf.gl_pathv[0] : path);
- globfree(&globbuf);
- return result;
+ static glob_t globbuf;
+ if (glob(path, GLOB_NOCHECK | GLOB_TILDE, NULL, &globbuf) < 0)
+ die("glob() failed");
+ char *result = sstrdup(globbuf.gl_pathc > 0 ? globbuf.gl_pathv[0] : path);
+ globfree(&globbuf);
+ return result;
}
-
/*
- * Reads the configuration from ~/.i3/config or /etc/i3/config if not found.
+ * Checks if the given path exists by calling stat().
*
- * If you specify override_configpath, only this path is used to look for a
- * configuration file.
+ */
+static bool path_exists(const char *path) {
+ struct stat buf;
+ return (stat(path, &buf) == 0);
+}
+
+/**
+ * Ungrabs all keys, to be called before re-grabbing the keys because of a
+ * mapping_notify event or a configuration file reload
*
*/
-void load_configuration(const char *override_configpath) {
-#define OPTION_STRING(name) \
- if (strcasecmp(key, #name) == 0) { \
- config.name = sstrdup(value); \
- continue; \
+void ungrab_all_keys(xcb_connection_t *conn) {
+ DLOG("Ungrabbing all keys\n");
+ xcb_ungrab_key(conn, XCB_GRAB_ANY, root, XCB_BUTTON_MASK_ANY);
+}
+
+static void grab_keycode_for_binding(xcb_connection_t *conn, Binding *bind, uint32_t keycode) {
+ DLOG("Grabbing %d\n", keycode);
+ /* Grab the key in all combinations */
+ #define GRAB_KEY(modifier) \
+ do { \
+ xcb_grab_key(conn, 0, root, modifier, keycode, \
+ XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC); \
+ } while (0)
+ int mods = bind->mods;
+ if ((bind->mods & BIND_MODE_SWITCH) != 0) {
+ mods &= ~BIND_MODE_SWITCH;
+ if (mods == 0)
+ mods = XCB_MOD_MASK_ANY;
}
+ GRAB_KEY(mods);
+ GRAB_KEY(mods | xcb_numlock_mask);
+ GRAB_KEY(mods | xcb_numlock_mask | XCB_MOD_MASK_LOCK);
+}
-#define REQUIRED_OPTION(name) \
- if (config.name == NULL) \
- die("You did not specify required configuration option " #name "\n");
+/*
+ * Returns a pointer to the Binding with the specified modifiers and keycode
+ * or NULL if no such binding exists.
+ *
+ */
+Binding *get_binding(uint16_t modifiers, xcb_keycode_t keycode) {
+ Binding *bind;
- /* Clear the old config or initialize the data structure */
- memset(&config, 0, sizeof(config));
+ TAILQ_FOREACH(bind, bindings, bindings) {
+ /* First compare the modifiers */
+ if (bind->mods != modifiers)
+ continue;
- FILE *handle;
- if (override_configpath != NULL) {
- if ((handle = fopen(override_configpath, "r")) == NULL)
- die("Could not open configfile \"%s\".\n", override_configpath);
- } else {
- /* We first check for ~/.i3/config, then for /etc/i3/config */
- char *globbed = glob_path("~/.i3/config");
- if ((handle = fopen(globbed, "r")) == NULL)
- if ((handle = fopen("/etc/i3/config", "r")) == NULL)
- die("Neither \"%s\" nor /etc/i3/config could be opened\n", globbed);
- free(globbed);
+ /* If a symbol was specified by the user, we need to look in
+ * the array of translated keycodes for the event’s keycode */
+ if (bind->symbol != NULL) {
+ if (memmem(bind->translated_to,
+ bind->number_keycodes * sizeof(xcb_keycode_t),
+ &keycode, sizeof(xcb_keycode_t)) != NULL)
+ break;
+ } else {
+ /* This case is easier: The user specified a keycode */
+ if (bind->keycode == keycode)
+ break;
+ }
}
- char key[512], value[512], buffer[1026];
- while (!feof(handle)) {
- if (fgets(buffer, 1024, handle) == NULL) {
- /* fgets returns NULL on EOF and on error, so see which one it is. */
- if (feof(handle))
- break;
- die("Could not read configuration file\n");
+ return (bind == TAILQ_END(bindings) ? NULL : bind);
+}
+
+/*
+ * Translates keysymbols to keycodes for all bindings which use keysyms.
+ *
+ */
+void translate_keysyms() {
+ Binding *bind;
+ TAILQ_FOREACH(bind, bindings, bindings) {
+ if (bind->keycode > 0)
+ continue;
+
+ /* We need to translate the symbol to a keycode */
+ xcb_keysym_t keysym = XStringToKeysym(bind->symbol);
+ if (keysym == NoSymbol) {
+ ELOG("Could not translate string to key symbol: \"%s\"\n", bind->symbol);
+ continue;
}
- /* sscanf implicitly strips whitespace. Also, we skip comments and empty lines. */
- if (sscanf(buffer, "%s %[^\n]", key, value) < 1 ||
- key[0] == '#' || strlen(key) < 3)
+#ifdef OLD_XCB_KEYSYMS_API
+ bind->number_keycodes = 1;
+ xcb_keycode_t code = xcb_key_symbols_get_keycode(keysyms, keysym);
+ DLOG("Translated symbol \"%s\" to 1 keycode (%d)\n", bind->symbol, code);
+ grab_keycode_for_binding(conn, bind, code);
+ bind->translated_to = smalloc(sizeof(xcb_keycode_t));
+ memcpy(bind->translated_to, &code, sizeof(xcb_keycode_t));
+#else
+ uint32_t last_keycode = 0;
+ xcb_keycode_t *keycodes = xcb_key_symbols_get_keycode(keysyms, keysym);
+ if (keycodes == NULL) {
+ DLOG("Could not translate symbol \"%s\"\n", bind->symbol);
continue;
+ }
- OPTION_STRING(terminal);
- OPTION_STRING(font);
-
- if (strcasecmp(key, "bind") == 0) {
- #define CHECK_MODIFIER(name) \
- if (strncasecmp(walk, #name, strlen(#name)) == 0) { \
- modifiers |= BIND_##name; \
- walk += strlen(#name) + 1; \
- continue; \
- }
- char *walk = value, *rest;
- uint32_t modifiers = 0;
-
- while (*walk != '\0') {
- /* Need to check for Mod1-5, Ctrl, Shift, Mode_switch */
- CHECK_MODIFIER(SHIFT);
- CHECK_MODIFIER(CONTROL);
- CHECK_MODIFIER(MODE_SWITCH);
- CHECK_MODIFIER(MOD1);
- CHECK_MODIFIER(MOD2);
- CHECK_MODIFIER(MOD3);
- CHECK_MODIFIER(MOD4);
- CHECK_MODIFIER(MOD5);
-
- /* No modifier found? Then we’re done with this step */
- break;
- }
+ bind->number_keycodes = 0;
- /* Now check for the keycode */
- int keycode = strtol(walk, &rest, 10);
- if (!rest || *rest != ' ')
- die("Invalid binding\n");
- rest++;
- printf("keycode = %d, modifiers = %d, command = *%s*\n", keycode, modifiers, rest);
- Binding *new = smalloc(sizeof(Binding));
- new->keycode = keycode;
- new->mods = modifiers;
- new->command = sstrdup(rest);
- TAILQ_INSERT_TAIL(&bindings, new, bindings);
+ for (xcb_keycode_t *walk = keycodes; *walk != 0; walk++) {
+ /* We hope duplicate keycodes will be returned in order
+ * and skip them */
+ if (last_keycode == *walk)
+ continue;
+ last_keycode = *walk;
+ bind->number_keycodes++;
+ }
+ DLOG("Translated symbol \"%s\" to %d keycode\n", bind->symbol, bind->number_keycodes);
+ bind->translated_to = smalloc(bind->number_keycodes * sizeof(xcb_keycode_t));
+ memcpy(bind->translated_to, keycodes, bind->number_keycodes * sizeof(xcb_keycode_t));
+ free(keycodes);
+#endif
+ }
+}
+
+/*
+ * Grab the bound keys (tell X to send us keypress events for those keycodes)
+ *
+ */
+void grab_all_keys(xcb_connection_t *conn, bool bind_mode_switch) {
+ Binding *bind;
+ TAILQ_FOREACH(bind, bindings, bindings) {
+ if ((bind_mode_switch && (bind->mods & BIND_MODE_SWITCH) == 0) ||
+ (!bind_mode_switch && (bind->mods & BIND_MODE_SWITCH) != 0))
+ continue;
+
+ /* The easy case: the user specified a keycode directly. */
+ if (bind->keycode > 0) {
+ grab_keycode_for_binding(conn, bind, bind->keycode);
continue;
}
- fprintf(stderr, "Unknown configfile option: %s\n", key);
- exit(1);
+ xcb_keycode_t *walk = bind->translated_to;
+ for (int i = 0; i < bind->number_keycodes; i++)
+ grab_keycode_for_binding(conn, bind, *walk);
+ }
+}
+
+/*
+ * Switches the key bindings to the given mode, if the mode exists
+ *
+ */
+void switch_mode(xcb_connection_t *conn, const char *new_mode) {
+ struct Mode *mode;
+
+ LOG("Switching to mode %s\n", new_mode);
+
+ SLIST_FOREACH(mode, &modes, modes) {
+ if (strcasecmp(mode->name, new_mode) != 0)
+ continue;
+
+ ungrab_all_keys(conn);
+ bindings = mode->bindings;
+ grab_all_keys(conn, false);
+ return;
+ }
+
+ ELOG("ERROR: Mode not found\n");
+}
+
+/*
+ * Get the path of the first configuration file found. Checks the XDG folders
+ * first ($XDG_CONFIG_HOME, $XDG_CONFIG_DIRS), then the traditional paths.
+ *
+ */
+static char *get_config_path() {
+ /* 1: check for $XDG_CONFIG_HOME/i3/config */
+ char *xdg_config_home, *xdg_config_dirs, *config_path;
+
+ if ((xdg_config_home = getenv("XDG_CONFIG_HOME")) == NULL)
+ xdg_config_home = "~/.config";
+
+ xdg_config_home = glob_path(xdg_config_home);
+ if (asprintf(&config_path, "%s/i3/config", xdg_config_home) == -1)
+ die("asprintf() failed");
+ free(xdg_config_home);
+
+ if (path_exists(config_path))
+ return config_path;
+ free(config_path);
+
+ /* 2: check for $XDG_CONFIG_DIRS/i3/config */
+ if ((xdg_config_dirs = getenv("XDG_CONFIG_DIRS")) == NULL)
+ xdg_config_dirs = "/etc/xdg";
+
+ char *buf = strdup(xdg_config_dirs);
+ char *tok = strtok(buf, ":");
+ while (tok != NULL) {
+ tok = glob_path(tok);
+ if (asprintf(&config_path, "%s/i3/config", tok) == -1)
+ die("asprintf() failed");
+ free(tok);
+ if (path_exists(config_path)) {
+ free(buf);
+ return config_path;
+ }
+ free(config_path);
+ tok = strtok(NULL, ":");
+ }
+ free(buf);
+
+ /* 3: check traditional paths */
+ config_path = glob_path("~/.i3/config");
+ if (path_exists(config_path))
+ return config_path;
+
+ config_path = strdup("/etc/i3/config");
+ if (!path_exists(config_path))
+ die("Neither $XDG_CONFIG_HOME/i3/config, nor "
+ "$XDG_CONFIG_DIRS/i3/config, nor ~/.i3/config nor "
+ "/etc/i3/config exist.");
+
+ return config_path;
+}
+
+/*
+ * Finds the configuration file to use (either the one specified by
+ * override_configpath), the user’s one or the system default) and calls
+ * parse_file().
+ *
+ */
+static void parse_configuration(const char *override_configpath) {
+ if (override_configpath != NULL) {
+ parse_file(override_configpath);
+ return;
+ }
+
+ char *path = get_config_path();
+ DLOG("Parsing configfile %s\n", path);
+ parse_file(path);
+ free(path);
+}
+
+/*
+ * (Re-)loads the configuration file (sets useful defaults before).
+ *
+ */
+void load_configuration(xcb_connection_t *conn, const char *override_configpath, bool reload) {
+ if (reload) {
+ /* First ungrab the keys */
+ ungrab_all_keys(conn);
+
+ struct Mode *mode;
+ Binding *bind;
+ while (!SLIST_EMPTY(&modes)) {
+ mode = SLIST_FIRST(&modes);
+ FREE(mode->name);
+
+ /* Clear the old binding list */
+ bindings = mode->bindings;
+ while (!TAILQ_EMPTY(bindings)) {
+ bind = TAILQ_FIRST(bindings);
+ TAILQ_REMOVE(bindings, bind, bindings);
+ FREE(bind->translated_to);
+ FREE(bind->command);
+ FREE(bind);
+ }
+ FREE(bindings);
+ SLIST_REMOVE(&modes, mode, Mode, modes);
+ }
+
+ struct Assignment *assign;
+ while (!TAILQ_EMPTY(&assignments)) {
+ assign = TAILQ_FIRST(&assignments);
+ FREE(assign->windowclass_title);
+ TAILQ_REMOVE(&assignments, assign, assignments);
+ FREE(assign);
+ }
+ }
+
+ SLIST_INIT(&modes);
+
+ struct Mode *default_mode = scalloc(sizeof(struct Mode));
+ default_mode->name = sstrdup("default");
+ default_mode->bindings = scalloc(sizeof(struct bindings_head));
+ TAILQ_INIT(default_mode->bindings);
+ SLIST_INSERT_HEAD(&modes, default_mode, modes);
+
+ bindings = default_mode->bindings;
+
+#define REQUIRED_OPTION(name) \
+ if (config.name == NULL) \
+ die("You did not specify required configuration option " #name "\n");
+
+ /* Clear the old config or initialize the data structure */
+ memset(&config, 0, sizeof(config));
+
+ /* Initialize default colors */
+#define INIT_COLOR(x, cborder, cbackground, ctext) \
+ do { \
+ x.border = get_colorpixel(conn, cborder); \
+ x.background = get_colorpixel(conn, cbackground); \
+ x.text = get_colorpixel(conn, ctext); \
+ } while (0)
+
+ INIT_COLOR(config.client.focused, "#4c7899", "#285577", "#ffffff");
+ INIT_COLOR(config.client.focused_inactive, "#333333", "#5f676a", "#ffffff");
+ INIT_COLOR(config.client.unfocused, "#333333", "#222222", "#888888");
+ INIT_COLOR(config.client.urgent, "#2f343a", "#900000", "#ffffff");
+ INIT_COLOR(config.bar.focused, "#4c7899", "#285577", "#ffffff");
+ INIT_COLOR(config.bar.unfocused, "#333333", "#222222", "#888888");
+ INIT_COLOR(config.bar.urgent, "#2f343a", "#900000", "#ffffff");
+
+ parse_configuration(override_configpath);
+
+ if (reload) {
+ translate_keysyms();
+ grab_all_keys(conn, false);
}
- fclose(handle);
- REQUIRED_OPTION(terminal);
REQUIRED_OPTION(font);
- return;
+ /* Set an empty name for every workspace which got no name */
+ Workspace *ws;
+ TAILQ_FOREACH(ws, workspaces, workspaces) {
+ if (ws->name != NULL) {
+ /* If the font was not specified when the workspace name
+ * was loaded, we need to predict the text width now */
+ if (ws->text_width == 0)
+ ws->text_width = predict_text_width(global_conn,
+ config.font, ws->name, ws->name_len);
+ continue;
+ }
+
+ workspace_set_name(ws, NULL);
+ }
}
projects / i3 / i3 / blobdiff