2 * vim:ts=4:sw=4:expandtab
4 * i3bar - an xcb-based status- and ws-bar for i3
5 * © 2010-2012 Axel Wagner and contributors (see also: LICENSE)
7 * outputs.c: Maintaining the output-list
15 #include <yajl/yajl_parse.h>
16 #include <yajl/yajl_version.h>
20 /* A datatype to pass through the callbacks to save the state */
21 struct outputs_json_params {
22 struct outputs_head *outputs;
23 i3_output *outputs_walk;
30 * Parse a null-value (current_workspace)
33 static int outputs_null_cb(void *params_) {
34 struct outputs_json_params *params = (struct outputs_json_params*) params_;
36 FREE(params->cur_key);
42 * Parse a boolean value (active)
45 static int outputs_boolean_cb(void *params_, int val) {
46 struct outputs_json_params *params = (struct outputs_json_params*) params_;
48 if (!strcmp(params->cur_key, "active")) {
49 params->outputs_walk->active = val;
50 FREE(params->cur_key);
54 if (!strcmp(params->cur_key, "primary")) {
55 params->outputs_walk->primary = val;
56 FREE(params->cur_key);
64 * Parse an integer (current_workspace or the rect)
67 static int outputs_integer_cb(void *params_, long long val) {
68 struct outputs_json_params *params = (struct outputs_json_params*) params_;
70 if (!strcmp(params->cur_key, "current_workspace")) {
71 params->outputs_walk->ws = (int) val;
72 FREE(params->cur_key);
76 if (!strcmp(params->cur_key, "x")) {
77 params->outputs_walk->rect.x = (int) val;
78 FREE(params->cur_key);
82 if (!strcmp(params->cur_key, "y")) {
83 params->outputs_walk->rect.y = (int) val;
84 FREE(params->cur_key);
88 if (!strcmp(params->cur_key, "width")) {
89 params->outputs_walk->rect.w = (int) val;
90 FREE(params->cur_key);
94 if (!strcmp(params->cur_key, "height")) {
95 params->outputs_walk->rect.h = (int) val;
96 FREE(params->cur_key);
104 * Parse a string (name)
107 static int outputs_string_cb(void *params_, const unsigned char *val, size_t len) {
108 struct outputs_json_params *params = (struct outputs_json_params*) params_;
110 if (!strcmp(params->cur_key, "current_workspace")) {
111 char *copy = smalloc(sizeof(const unsigned char) * (len + 1));
112 strncpy(copy, (const char*) val, len);
117 long parsed_num = strtol(copy, &end, 10);
119 (end && *end == '\0'))
120 params->outputs_walk->ws = parsed_num;
122 FREE(params->cur_key);
126 if (strcmp(params->cur_key, "name")) {
130 char *name = smalloc(sizeof(const unsigned char) * (len + 1));
131 strncpy(name, (const char*) val, len);
134 params->outputs_walk->name = name;
136 FREE(params->cur_key);
142 * We hit the start of a json-map (rect or a new output)
145 static int outputs_start_map_cb(void *params_) {
146 struct outputs_json_params *params = (struct outputs_json_params*) params_;
147 i3_output *new_output = NULL;
149 if (params->cur_key == NULL) {
150 new_output = smalloc(sizeof(i3_output));
151 new_output->name = NULL;
153 memset(&new_output->rect, 0, sizeof(rect));
154 new_output->bar = XCB_NONE;
156 new_output->workspaces = smalloc(sizeof(struct ws_head));
157 TAILQ_INIT(new_output->workspaces);
159 new_output->trayclients = smalloc(sizeof(struct tc_head));
160 TAILQ_INIT(new_output->trayclients);
162 params->outputs_walk = new_output;
167 if (!strcmp(params->cur_key, "rect")) {
168 params->in_rect = true;
175 * We hit the end of a map (rect or a new output)
178 static int outputs_end_map_cb(void *params_) {
179 struct outputs_json_params *params = (struct outputs_json_params*) params_;
180 if (params->in_rect) {
181 params->in_rect = false;
182 /* Ignore the end of a rect */
186 /* See if we actually handle that output */
187 if (config.num_outputs > 0) {
188 bool handle_output = false;
189 for (int c = 0; c < config.num_outputs; c++) {
190 if (strcasecmp(params->outputs_walk->name, config.outputs[c]) != 0)
193 handle_output = true;
196 if (!handle_output) {
197 DLOG("Ignoring output \"%s\", not configured to handle it.\n",
198 params->outputs_walk->name);
199 FREE(params->outputs_walk->name);
200 FREE(params->outputs_walk->workspaces);
201 FREE(params->outputs_walk->trayclients);
202 FREE(params->outputs_walk);
203 FREE(params->cur_key);
208 i3_output *target = get_output_by_name(params->outputs_walk->name);
210 if (target == NULL) {
211 SLIST_INSERT_HEAD(outputs, params->outputs_walk, slist);
213 target->active = params->outputs_walk->active;
214 target->primary = params->outputs_walk->primary;
215 target->ws = params->outputs_walk->ws;
216 target->rect = params->outputs_walk->rect;
224 * Essentially we just save it in the parsing-state
227 static int outputs_map_key_cb(void *params_, const unsigned char *keyVal, size_t keyLen) {
228 struct outputs_json_params *params = (struct outputs_json_params*) params_;
229 FREE(params->cur_key);
231 params->cur_key = smalloc(sizeof(unsigned char) * (keyLen + 1));
232 strncpy(params->cur_key, (const char*) keyVal, keyLen);
233 params->cur_key[keyLen] = '\0';
238 /* A datastructure to pass all these callbacks to yajl */
239 static yajl_callbacks outputs_callbacks = {
240 .yajl_null = outputs_null_cb,
241 .yajl_boolean = outputs_boolean_cb,
242 .yajl_integer = outputs_integer_cb,
243 .yajl_string = outputs_string_cb,
244 .yajl_start_map = outputs_start_map_cb,
245 .yajl_map_key = outputs_map_key_cb,
246 .yajl_end_map = outputs_end_map_cb,
250 * Initiate the output-list
253 void init_outputs(void) {
254 outputs = smalloc(sizeof(struct outputs_head));
259 * Start parsing the received json-string
262 void parse_outputs_json(char *json) {
263 struct outputs_json_params params;
265 params.outputs_walk = NULL;
266 params.cur_key = NULL;
268 params.in_rect = false;
272 handle = yajl_alloc(&outputs_callbacks, NULL, (void*) ¶ms);
274 state = yajl_parse(handle, (const unsigned char*) json, strlen(json));
276 /* FIXME: Propper errorhandling for JSON-parsing */
280 case yajl_status_client_canceled:
281 case yajl_status_error:
282 ELOG("Could not parse outputs-reply!\n");
291 * Returns the output with the given name
294 i3_output *get_output_by_name(char *name) {
299 SLIST_FOREACH(walk, outputs, slist) {
300 if (!strcmp(walk->name, name)) {