/* * vim:ts=8:expandtab * * i3 - an improved dynamic tiling window manager * * © 2009 Michael Stapelberg and contributors * * See file LICENSE for license information. * */ #include #include #include #include #include #include "i3.h" #include "util.h" #include "config.h" #include "xcb.h" Config config; /* * 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; } /* * This function does a very simple replacement of each instance of key with value. * */ static void replace_variable(char *buffer, const char *key, const char *value) { char *pos; /* To prevent endless recursions when the user makes an error configuring, * we stop after 100 replacements. That should be vastly more than enough. */ int c = 0; LOG("Replacing %s with %s\n", key, value); while ((pos = strcasestr(buffer, key)) != NULL && c++ < 100) { LOG("replacing variable %s in \"%s\" with \"%s\"\n", key, buffer, value); char *rest = pos + strlen(key); *pos = '\0'; char *replaced; asprintf(&replaced, "%s%s%s", buffer, value, rest); /* Hm, this is a bit ugly, but sizeof(buffer) = 4, as it’s just a pointer. * So we need to hard-code the dimensions here. */ strncpy(buffer, replaced, 1026); free(replaced); } } /* * Ungrab the bound keys * */ void ungrab_all_keys(xcb_connection_t *conn) { Binding *bind; TAILQ_FOREACH(bind, &bindings, bindings) { LOG("Ungrabbing %d\n", bind->keycode); xcb_ungrab_key(conn, bind->keycode, root, bind->keycode); } } /* * Grab the bound keys (tell X to send us keypress events for those keycodes) * */ void grab_all_keys(xcb_connection_t *conn) { Binding *bind; TAILQ_FOREACH(bind, &bindings, bindings) { LOG("Grabbing %d\n", bind->keycode); if ((bind->mods & BIND_MODE_SWITCH) != 0) xcb_grab_key(conn, 0, root, 0, bind->keycode, XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_SYNC); else { /* Grab the key in all combinations */ #define GRAB_KEY(modifier) xcb_grab_key(conn, 0, root, modifier, bind->keycode, \ XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC) GRAB_KEY(bind->mods); GRAB_KEY(bind->mods | xcb_numlock_mask); GRAB_KEY(bind->mods | xcb_numlock_mask | XCB_MOD_MASK_LOCK); } } } /* * Reads the configuration from ~/.i3/config or /etc/i3/config if not found. * * If you specify override_configpath, only this path is used to look for a * configuration file. * */ void load_configuration(xcb_connection_t *conn, const char *override_configpath, bool reload) { if (reload) { /* First ungrab the keys */ ungrab_all_keys(conn); /* Clear the old binding and assignment lists */ Binding *bind; while (!TAILQ_EMPTY(&bindings)) { bind = TAILQ_FIRST(&bindings); TAILQ_REMOVE(&bindings, bind, bindings); FREE(bind->command); FREE(bind); } struct Assignment *assign; while (!TAILQ_EMPTY(&assignments)) { assign = TAILQ_FIRST(&assignments); FREE(assign->windowclass_title); TAILQ_REMOVE(&assignments, assign, assignments); FREE(assign); } } SLIST_HEAD(variables_head, Variable) variables; #define OPTION_STRING(name) \ if (strcasecmp(key, #name) == 0) { \ config.name = sstrdup(value); \ continue; \ } #define REQUIRED_OPTION(name) \ if (config.name == NULL) \ die("You did not specify required configuration option " #name "\n"); #define OPTION_COLORTRIPLE(opt, name) \ if (strcasecmp(key, opt) == 0) { \ char border[8], background[8], text[8]; \ memset(border, 0, sizeof(border)); \ memset(background, 0, sizeof(background)); \ memset(text, 0, sizeof(text)); \ border[0] = background[0] = text[0] = '#'; \ if (sscanf(value, "#%06[0-9a-fA-F] #%06[0-9a-fA-F] #%06[0-9a-fA-F]", \ border + 1, background + 1, text + 1) != 3 || \ strlen(border) != 7 || \ strlen(background) != 7 || \ strlen(text) != 7) \ die("invalid color code line: %s\n", value); \ config.name.border = get_colorpixel(conn, border); \ config.name.background = get_colorpixel(conn, background); \ config.name.text = get_colorpixel(conn, text); \ continue; \ } /* Clear the old config or initialize the data structure */ memset(&config, 0, sizeof(config)); SLIST_INIT(&variables); /* Initialize default colors */ config.client.focused.border = get_colorpixel(conn, "#4c7899"); config.client.focused.background = get_colorpixel(conn, "#285577"); config.client.focused.text = get_colorpixel(conn, "#ffffff"); config.client.focused_inactive.border = get_colorpixel(conn, "#4c7899"); config.client.focused_inactive.background = get_colorpixel(conn, "#555555"); config.client.focused_inactive.text = get_colorpixel(conn, "#ffffff"); config.client.unfocused.border = get_colorpixel(conn, "#333333"); config.client.unfocused.background = get_colorpixel(conn, "#222222"); config.client.unfocused.text = get_colorpixel(conn, "#888888"); config.bar.focused.border = get_colorpixel(conn, "#4c7899"); config.bar.focused.background = get_colorpixel(conn, "#285577"); config.bar.focused.text = get_colorpixel(conn, "#ffffff"); config.bar.unfocused.border = get_colorpixel(conn, "#333333"); config.bar.unfocused.background = get_colorpixel(conn, "#222222"); config.bar.unfocused.text = get_colorpixel(conn, "#888888"); 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]; 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"); } if (config.terminal != NULL) replace_variable(buffer, "$terminal", config.terminal); /* Replace all custom variables */ struct Variable *current; SLIST_FOREACH(current, &variables, variables) replace_variable(buffer, current->key, current->value); /* 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; OPTION_STRING(terminal); OPTION_STRING(font); /* Colors */ OPTION_COLORTRIPLE("client.focused", client.focused); OPTION_COLORTRIPLE("client.focused_inactive", client.focused_inactive); OPTION_COLORTRIPLE("client.unfocused", client.unfocused); OPTION_COLORTRIPLE("bar.focused", bar.focused); OPTION_COLORTRIPLE("bar.unfocused", bar.unfocused); /* exec-lines (autostart) */ if (strcasecmp(key, "exec") == 0) { struct Autostart *new = smalloc(sizeof(struct Autostart)); new->command = sstrdup(value); TAILQ_INSERT_TAIL(&autostarts, new, autostarts); continue; } /* key bindings */ 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; } /* 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 (strcasecmp(key, "floating_modifier") == 0) { char *walk = value; 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; } LOG("Floating modifiers = %d\n", modifiers); config.floating_modifier = modifiers; continue; } /* assign window class[/window title] → workspace */ if (strcasecmp(key, "assign") == 0) { LOG("assign: \"%s\"\n", value); char *class_title; char *target; char *end; /* If the window class/title is quoted we skip quotes */ if (value[0] == '"') { class_title = sstrdup(value+1); end = strchr(class_title, '"'); } else { class_title = sstrdup(value); /* If it is not quoted, we terminate it at the first space */ end = strchr(class_title, ' '); } if (end == NULL) die("Malformed assignment, couldn't find terminating quote\n"); *end = '\0'; /* Strip trailing whitespace */ while (strlen(value) > 0 && value[strlen(value)-1] == ' ') value[strlen(value)-1] = '\0'; /* The target is the last argument separated by a space */ if ((target = strrchr(value, ' ')) == NULL) die("Malformed assignment, couldn't find target (\"%s\")\n", value); target++; if (strchr(target, '~') == NULL && (atoi(target) < 1 || atoi(target) > 10)) die("Malformed assignment, invalid workspace number\n"); LOG("assignment parsed: \"%s\" to \"%s\"\n", class_title, target); struct Assignment *new = scalloc(sizeof(struct Assignment)); new->windowclass_title = class_title; if (strchr(target, '~') != NULL) new->floating = ASSIGN_FLOATING_ONLY; while (*target == '~') target++; if (atoi(target) >= 1 && atoi(target) <= 10) { if (new->floating == ASSIGN_FLOATING_ONLY) new->floating = ASSIGN_FLOATING; new->workspace = atoi(target); } TAILQ_INSERT_TAIL(&assignments, new, assignments); LOG("Assignment loaded: \"%s\":\n", class_title); if (new->floating != ASSIGN_FLOATING_ONLY) LOG(" to workspace %d\n", new->workspace); if (new->floating != ASSIGN_FLOATING_NO) LOG(" will be floating\n"); continue; } /* set a custom variable */ if (strcasecmp(key, "set") == 0) { if (value[0] != '$') die("Malformed variable assignment, name has to start with $\n"); /* get key/value for this variable */ char *v_key = value, *v_value; if ((v_value = strstr(value, " ")) == NULL) die("Malformed variable assignment, need a value\n"); *(v_value++) = '\0'; struct Variable *new = scalloc(sizeof(struct Variable)); new->key = sstrdup(v_key); new->value = sstrdup(v_value); SLIST_INSERT_HEAD(&variables, new, variables); LOG("Got new variable %s = %s\n", v_key, v_value); continue; } die("Unknown configfile option: %s\n", key); } /* now grab all keys again */ if (reload) grab_all_keys(conn); fclose(handle); REQUIRED_OPTION(terminal); REQUIRED_OPTION(font); while (!SLIST_EMPTY(&variables)) { struct Variable *v = SLIST_FIRST(&variables); SLIST_REMOVE_HEAD(&variables, variables); free(v->key); free(v->value); free(v); } return; }