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gri3-wm/i3bar/src/config.c

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/*
* vim:ts=4:sw=4:expandtab
*
* i3bar - an xcb-based status- and ws-bar for i3
* © 2010 Axel Wagner and contributors (see also: LICENSE)
*
* config.c: Parses the configuration (received from i3).
*
*/
#include "common.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <X11/Xlib.h>
#include <yajl/yajl_parse.h>
config_t config;
static char *cur_key;
static bool parsing_bindings;
static bool parsing_tray_outputs;
/*
* Parse a key.
*
* Essentially we just save it in cur_key.
*
*/
static int config_map_key_cb(void *params_, const unsigned char *keyVal, size_t keyLen) {
FREE(cur_key);
sasprintf(&(cur_key), "%.*s", keyLen, keyVal);
if (strcmp(cur_key, "bindings") == 0) {
parsing_bindings = true;
}
if (strcmp(cur_key, "tray_outputs") == 0) {
parsing_tray_outputs = true;
}
return 1;
}
static int config_end_array_cb(void *params_) {
parsing_bindings = false;
parsing_tray_outputs = false;
return 1;
}
/*
* Parse a null value (current_workspace)
*
*/
static int config_null_cb(void *params_) {
if (!strcmp(cur_key, "id")) {
/* If 'id' is NULL, the bar config was not found. Error out. */
ELOG("No such bar config. Use 'i3-msg -t get_bar_config' to get the available configs.\n");
ELOG("Are you starting i3bar by hand? You should not:\n");
ELOG("Configure a 'bar' block in your i3 config and i3 will launch i3bar automatically.\n");
exit(EXIT_FAILURE);
}
return 1;
}
/*
* Parse a string
*
*/
static int config_string_cb(void *params_, const unsigned char *val, size_t _len) {
int len = (int)_len;
/* The id and socket_path are ignored, we already know them. */
if (!strcmp(cur_key, "id") || !strcmp(cur_key, "socket_path"))
return 1;
if (parsing_bindings) {
if (strcmp(cur_key, "command") == 0) {
binding_t *binding = TAILQ_LAST(&(config.bindings), bindings_head);
if (binding == NULL) {
ELOG("There is no binding to put the current command onto. This is a bug in i3.\n");
return 0;
}
if (binding->command != NULL) {
ELOG("The binding for input_code = %d already has a command. This is a bug in i3.\n", binding->input_code);
return 0;
}
sasprintf(&(binding->command), "%.*s", len, val);
return 1;
}
ELOG("Unknown key \"%s\" while parsing bar bindings.\n", cur_key);
return 0;
}
if (parsing_tray_outputs) {
DLOG("Adding tray_output = %.*s to the list.\n", len, val);
tray_output_t *tray_output = scalloc(1, sizeof(tray_output_t));
sasprintf(&(tray_output->output), "%.*s", len, val);
TAILQ_INSERT_TAIL(&(config.tray_outputs), tray_output, tray_outputs);
return 1;
}
if (!strcmp(cur_key, "mode")) {
DLOG("mode = %.*s, len = %d\n", len, val, len);
config.hide_on_modifier = (len == strlen("dock") && !strncmp((const char *)val, "dock", strlen("dock")) ? M_DOCK
: (len == strlen("hide") && !strncmp((const char *)val, "hide", strlen("hide")) ? M_HIDE
: M_INVISIBLE));
return 1;
}
if (!strcmp(cur_key, "hidden_state")) {
DLOG("hidden_state = %.*s, len = %d\n", len, val, len);
config.hidden_state = (len == strlen("hide") && !strncmp((const char *)val, "hide", strlen("hide")) ? S_HIDE : S_SHOW);
return 1;
}
/* Kept for backwards compatibility. */
if (!strcmp(cur_key, "modifier")) {
DLOG("modifier = %.*s\n", len, val);
if (len == strlen("none") && !strncmp((const char *)val, "none", strlen("none"))) {
config.modifier = XCB_NONE;
return 1;
}
if (len == strlen("shift") && !strncmp((const char *)val, "shift", strlen("shift"))) {
config.modifier = ShiftMask;
return 1;
}
if (len == strlen("ctrl") && !strncmp((const char *)val, "ctrl", strlen("ctrl"))) {
config.modifier = ControlMask;
return 1;
}
if (len == strlen("Mod") + 1 && !strncmp((const char *)val, "Mod", strlen("Mod"))) {
switch (val[3]) {
case '1':
config.modifier = Mod1Mask;
return 1;
case '2':
config.modifier = Mod2Mask;
return 1;
case '3':
config.modifier = Mod3Mask;
return 1;
case '5':
config.modifier = Mod5Mask;
return 1;
}
}
config.modifier = Mod4Mask;
return 1;
}
/* This key was sent in <= 4.10.2. We keep it around to avoid breakage for
* users updating from that version and restarting i3bar before i3. */
if (!strcmp(cur_key, "wheel_up_cmd")) {
DLOG("wheel_up_cmd = %.*s\n", len, val);
binding_t *binding = scalloc(1, sizeof(binding_t));
binding->input_code = 4;
sasprintf(&(binding->command), "%.*s", len, val);
TAILQ_INSERT_TAIL(&(config.bindings), binding, bindings);
return 1;
}
/* This key was sent in <= 4.10.2. We keep it around to avoid breakage for
* users updating from that version and restarting i3bar before i3. */
if (!strcmp(cur_key, "wheel_down_cmd")) {
DLOG("wheel_down_cmd = %.*s\n", len, val);
binding_t *binding = scalloc(1, sizeof(binding_t));
binding->input_code = 5;
sasprintf(&(binding->command), "%.*s", len, val);
TAILQ_INSERT_TAIL(&(config.bindings), binding, bindings);
return 1;
}
if (!strcmp(cur_key, "position")) {
DLOG("position = %.*s\n", len, val);
config.position = (len == strlen("top") && !strncmp((const char *)val, "top", strlen("top")) ? POS_TOP : POS_BOT);
return 1;
}
if (!strcmp(cur_key, "status_command")) {
DLOG("command = %.*s\n", len, val);
FREE(config.command);
sasprintf(&config.command, "%.*s", len, val);
return 1;
}
if (!strcmp(cur_key, "font")) {
DLOG("font = %.*s\n", len, val);
FREE(config.fontname);
sasprintf(&config.fontname, "%.*s", len, val);
return 1;
}
if (!strcmp(cur_key, "separator_symbol")) {
DLOG("separator = %.*s\n", len, val);
I3STRING_FREE(config.separator_symbol);
config.separator_symbol = i3string_from_utf8_with_length((const char *)val, len);
return 1;
}
if (!strcmp(cur_key, "outputs")) {
DLOG("+output %.*s\n", len, val);
int new_num_outputs = config.num_outputs + 1;
config.outputs = srealloc(config.outputs, sizeof(char *) * new_num_outputs);
sasprintf(&config.outputs[config.num_outputs], "%.*s", len, val);
config.num_outputs = new_num_outputs;
return 1;
}
/* We keep the old single tray_output working for users who only restart i3bar
* after updating. */
if (!strcmp(cur_key, "tray_output")) {
DLOG("Found deprecated key tray_output %.*s.\n", len, val);
tray_output_t *tray_output = scalloc(1, sizeof(tray_output_t));
sasprintf(&(tray_output->output), "%.*s", len, val);
TAILQ_INSERT_TAIL(&(config.tray_outputs), tray_output, tray_outputs);
return 1;
}
#define COLOR(json_name, struct_name) \
do { \
if (!strcmp(cur_key, #json_name)) { \
DLOG(#json_name " = " #struct_name " = %.*s\n", len, val); \
sasprintf(&(config.colors.struct_name), "%.*s", len, val); \
return 1; \
} \
} while (0)
COLOR(statusline, bar_fg);
COLOR(background, bar_bg);
COLOR(separator, sep_fg);
COLOR(focused_statusline, focus_bar_fg);
COLOR(focused_background, focus_bar_bg);
COLOR(focused_separator, focus_sep_fg);
COLOR(focused_workspace_border, focus_ws_border);
COLOR(focused_workspace_bg, focus_ws_bg);
COLOR(focused_workspace_text, focus_ws_fg);
COLOR(active_workspace_border, active_ws_border);
COLOR(active_workspace_bg, active_ws_bg);
COLOR(active_workspace_text, active_ws_fg);
COLOR(inactive_workspace_border, inactive_ws_border);
COLOR(inactive_workspace_bg, inactive_ws_bg);
COLOR(inactive_workspace_text, inactive_ws_fg);
COLOR(urgent_workspace_border, urgent_ws_border);
COLOR(urgent_workspace_bg, urgent_ws_bg);
COLOR(urgent_workspace_text, urgent_ws_fg);
COLOR(binding_mode_border, binding_mode_border);
COLOR(binding_mode_bg, binding_mode_bg);
COLOR(binding_mode_text, binding_mode_fg);
printf("got unexpected string %.*s for cur_key = %s\n", len, val, cur_key);
return 0;
}
/*
* Parse a boolean value
*
*/
static int config_boolean_cb(void *params_, int val) {
if (parsing_bindings) {
if (strcmp(cur_key, "release") == 0) {
binding_t *binding = TAILQ_LAST(&(config.bindings), bindings_head);
if (binding == NULL) {
ELOG("There is no binding to put the current command onto. This is a bug in i3.\n");
return 0;
}
binding->release = val;
return 1;
}
ELOG("Unknown key \"%s\" while parsing bar bindings.\n", cur_key);
}
if (!strcmp(cur_key, "binding_mode_indicator")) {
DLOG("binding_mode_indicator = %d\n", val);
config.disable_binding_mode_indicator = !val;
return 1;
}
if (!strcmp(cur_key, "workspace_buttons")) {
DLOG("workspace_buttons = %d\n", val);
config.disable_ws = !val;
return 1;
}
if (!strcmp(cur_key, "strip_workspace_numbers")) {
DLOG("strip_workspace_numbers = %d\n", val);
config.strip_ws_numbers = val;
return 1;
}
if (!strcmp(cur_key, "strip_workspace_name")) {
DLOG("strip_workspace_name = %d\n", val);
config.strip_ws_name = val;
return 1;
}
if (!strcmp(cur_key, "verbose")) {
if (!config.verbose) {
DLOG("verbose = %d\n", val);
config.verbose = val;
}
return 1;
}
return 0;
}
/*
* Parse an integer value
*
*/
static int config_integer_cb(void *params_, long long val) {
if (parsing_bindings) {
if (strcmp(cur_key, "input_code") == 0) {
binding_t *binding = scalloc(1, sizeof(binding_t));
binding->input_code = val;
TAILQ_INSERT_TAIL(&(config.bindings), binding, bindings);
return 1;
}
ELOG("Unknown key \"%s\" while parsing bar bindings.\n", cur_key);
return 0;
}
if (!strcmp(cur_key, "tray_padding")) {
DLOG("tray_padding = %lld\n", val);
config.tray_padding = val;
return 1;
}
if (!strcmp(cur_key, "modifier")) {
DLOG("modifier = %lld\n", val);
config.modifier = (uint32_t)val;
return 1;
}
if (!strcmp(cur_key, "workspace_min_width")) {
DLOG("workspace_min_width = %lld\n", val);
config.ws_min_width = val;
return 1;
}
return 0;
}
/* A datastructure to pass all these callbacks to yajl */
static yajl_callbacks outputs_callbacks = {
.yajl_null = config_null_cb,
.yajl_boolean = config_boolean_cb,
.yajl_integer = config_integer_cb,
.yajl_string = config_string_cb,
.yajl_end_array = config_end_array_cb,
.yajl_map_key = config_map_key_cb,
};
/*
* Start parsing the received bar configuration JSON string
*
*/
void parse_config_json(char *json) {
yajl_handle handle;
yajl_status state;
handle = yajl_alloc(&outputs_callbacks, NULL, NULL);
TAILQ_INIT(&(config.bindings));
TAILQ_INIT(&(config.tray_outputs));
state = yajl_parse(handle, (const unsigned char *)json, strlen(json));
/* FIXME: Proper error handling for JSON parsing */
switch (state) {
case yajl_status_ok:
break;
case yajl_status_client_canceled:
case yajl_status_error:
ELOG("Could not parse config reply!\n");
exit(EXIT_FAILURE);
break;
}
yajl_free(handle);
}
/*
* free()s the color strings as soon as they are not needed anymore.
*
*/
void free_colors(struct xcb_color_strings_t *colors) {
#define FREE_COLOR(x) \
do { \
FREE(colors->x); \
} while (0)
FREE_COLOR(bar_fg);
FREE_COLOR(bar_bg);
FREE_COLOR(sep_fg);
FREE_COLOR(focus_bar_fg);
FREE_COLOR(focus_bar_bg);
FREE_COLOR(focus_sep_fg);
FREE_COLOR(active_ws_fg);
FREE_COLOR(active_ws_bg);
FREE_COLOR(active_ws_border);
FREE_COLOR(inactive_ws_fg);
FREE_COLOR(inactive_ws_bg);
FREE_COLOR(inactive_ws_border);
FREE_COLOR(urgent_ws_fg);
FREE_COLOR(urgent_ws_bg);
FREE_COLOR(urgent_ws_border);
FREE_COLOR(focus_ws_fg);
FREE_COLOR(focus_ws_bg);
FREE_COLOR(focus_ws_border);
FREE_COLOR(binding_mode_fg);
FREE_COLOR(binding_mode_bg);
FREE_COLOR(binding_mode_border);
#undef FREE_COLOR
}
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