/*
- * vim:ts=8:expandtab
+ * vim:ts=4:sw=4:expandtab
*
* i3 - an improved dynamic tiling window manager
*
- * © 2009 Michael Stapelberg and contributors
+ * © 2009-2010 Michael Stapelberg and contributors
*
* 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 <stdlib.h>
-#include <glob.h>
-#include "i3.h"
-#include "util.h"
-#include "config.h"
+/* We need Xlib for XStringToKeysym */
+#include <X11/Xlib.h>
+#include <wordexp.h>
+
+#include "all.h"
+char *current_configpath = NULL;
Config config;
+struct modes_head modes;
+
+/**
+ * Ungrabs all keys, to be called before re-grabbing the keys because of a
+ * mapping_notify event or a configuration file reload
+ *
+ */
+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);
+}
/*
- * This function resolves ~ in pathnames.
+ * Returns a pointer to the Binding with the specified modifiers and keycode
+ * or NULL if no such binding exists.
*
*/
-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;
+Binding *get_binding(uint16_t modifiers, xcb_keycode_t keycode) {
+ Binding *bind;
+
+ TAILQ_FOREACH(bind, bindings, bindings) {
+ /* First compare the modifiers */
+ if (bind->mods != modifiers)
+ continue;
+
+ /* 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;
+ }
+ }
+
+ 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;
+ }
+
+ 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;
+ }
+
+ bind->number_keycodes = 0;
+
+ 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);
+ }
+}
/*
- * Reads the configuration from ~/.i3/config or /etc/i3/config if not found.
+ * Grab the bound keys (tell X to send us keypress events for those keycodes)
*
- * If you specify override_configpath, only this path is used to look for a
- * configuration file.
+ */
+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;
+ }
+
+ 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 load_configuration(const char *override_configpath) {
-#define OPTION_STRING(name) \
- if (strcasecmp(key, #name) == 0) { \
- config.name = sstrdup(value); \
- continue; \
+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;
+ translate_keysyms();
+ grab_all_keys(conn, false);
+ return;
}
+ ELOG("ERROR: Mode not found\n");
+}
+
+/*
+ * Get the path of the first configuration file found. If override_configpath
+ * is specified, that path is returned and saved for further calls. Otherwise,
+ * checks the home directory first, then the system directory first, always
+ * taking into account the XDG Base Directory Specification ($XDG_CONFIG_HOME,
+ * $XDG_CONFIG_DIRS)
+ *
+ */
+static char *get_config_path(const char *override_configpath) {
+ char *xdg_config_home, *xdg_config_dirs, *config_path;
+
+ static const char *saved_configpath = NULL;
+
+ if (override_configpath != NULL) {
+ saved_configpath = override_configpath;
+ return sstrdup(saved_configpath);
+ }
+
+ if (saved_configpath != NULL)
+ return sstrdup(saved_configpath);
+
+ /* 1: check the traditional path under the home directory */
+ config_path = resolve_tilde("~/.i3/config");
+ if (path_exists(config_path))
+ return config_path;
+
+ /* 2: check for $XDG_CONFIG_HOME/i3/config */
+ if ((xdg_config_home = getenv("XDG_CONFIG_HOME")) == NULL)
+ xdg_config_home = "~/.config";
+
+ xdg_config_home = resolve_tilde(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);
+
+ /* 3: check the traditional path under /etc */
+ config_path = SYSCONFDIR "/i3/config";
+ if (path_exists(config_path))
+ return sstrdup(config_path);
+
+ /* 4: check for $XDG_CONFIG_DIRS/i3/config */
+ if ((xdg_config_dirs = getenv("XDG_CONFIG_DIRS")) == NULL)
+ xdg_config_dirs = "/etc/xdg";
+
+ char *buf = sstrdup(xdg_config_dirs);
+ char *tok = strtok(buf, ":");
+ while (tok != NULL) {
+ tok = resolve_tilde(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);
+
+ die("Unable to find the configuration file (looked at "
+ "~/.i3/config, $XDG_CONFIG_HOME/i3/config, "
+ SYSCONFDIR "i3/config and $XDG_CONFIG_DIRS/i3/config)");
+}
+
+/*
+ * 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) {
+ char *path = get_config_path(override_configpath);
+ DLOG("Parsing configfile %s\n", path);
+ FREE(current_configpath);
+ current_configpath = path;
+ parse_file(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);
+ }
+
+#if 0
+ struct Assignment *assign;
+ while (!TAILQ_EMPTY(&assignments)) {
+ assign = TAILQ_FIRST(&assignments);
+ FREE(assign->windowclass_title);
+ TAILQ_REMOVE(&assignments, assign, assignments);
+ FREE(assign);
+ }
+#endif
+
+ /* Clear workspace names */
+#if 0
+ Workspace *ws;
+ TAILQ_FOREACH(ws, workspaces, workspaces)
+ workspace_set_name(ws, NULL);
+#endif
+ }
+
+ 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));
- 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);
- }
- char key[512], value[512], buffer[1026];
+ /* Initialize default colors */
+#define INIT_COLOR(x, cborder, cbackground, ctext) \
+ do { \
+ x.border = get_colorpixel(cborder); \
+ x.background = get_colorpixel(cbackground); \
+ x.text = get_colorpixel(ctext); \
+ } while (0)
- 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");
- }
+ config.client.background = get_colorpixel("#000000");
+ 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");
- /* sscanf implicitly strips whitespace. Also, we skip comments and empty lines. */
- if (sscanf(buffer, "%s %[^\n]", key, value) < 1 ||
- key[0] == '#' || strlen(key) < 3)
- continue;
+ config.default_border = BS_NORMAL;
+ /* Set default_orientation to NO_ORIENTATION for auto orientation. */
+ config.default_orientation = NO_ORIENTATION;
- 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;
- }
+ parse_configuration(override_configpath);
- /* Now check for the keycode */
- int keycode = strtol(walk, &rest, 10);
- if (!rest || *rest != ' ')
- die("Invalid binding\n");
- rest++;
- LOG("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);
- continue;
- }
+ if (reload) {
+ translate_keysyms();
+ grab_all_keys(conn, false);
+ }
- fprintf(stderr, "Unknown configfile option: %s\n", key);
- exit(1);
+ if (config.font.id == 0) {
+ ELOG("You did not specify required configuration option \"font\"\n");
+ config.font = load_font("fixed", true);
}
- fclose(handle);
- REQUIRED_OPTION(terminal);
- REQUIRED_OPTION(font);
+#if 0
+ /* 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;
+ }
- return;
+ workspace_set_name(ws, NULL);
+ }
+#endif
}