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)
68 static int outputs_integer_cb(void *params_, long long val) {
70 static int outputs_integer_cb(void *params_, long val) {
72 struct outputs_json_params *params = (struct outputs_json_params*) params_;
74 if (!strcmp(params->cur_key, "current_workspace")) {
75 params->outputs_walk->ws = (int) val;
76 FREE(params->cur_key);
80 if (!strcmp(params->cur_key, "x")) {
81 params->outputs_walk->rect.x = (int) val;
82 FREE(params->cur_key);
86 if (!strcmp(params->cur_key, "y")) {
87 params->outputs_walk->rect.y = (int) val;
88 FREE(params->cur_key);
92 if (!strcmp(params->cur_key, "width")) {
93 params->outputs_walk->rect.w = (int) val;
94 FREE(params->cur_key);
98 if (!strcmp(params->cur_key, "height")) {
99 params->outputs_walk->rect.h = (int) val;
100 FREE(params->cur_key);
108 * Parse a string (name)
112 static int outputs_string_cb(void *params_, const unsigned char *val, size_t len) {
114 static int outputs_string_cb(void *params_, const unsigned char *val, unsigned int len) {
116 struct outputs_json_params *params = (struct outputs_json_params*) params_;
118 if (!strcmp(params->cur_key, "current_workspace")) {
119 char *copy = smalloc(sizeof(const unsigned char) * (len + 1));
120 strncpy(copy, (const char*) val, len);
125 long parsed_num = strtol(copy, &end, 10);
127 (end && *end == '\0'))
128 params->outputs_walk->ws = parsed_num;
130 FREE(params->cur_key);
134 if (strcmp(params->cur_key, "name")) {
138 char *name = smalloc(sizeof(const unsigned char) * (len + 1));
139 strncpy(name, (const char*) val, len);
142 params->outputs_walk->name = name;
144 FREE(params->cur_key);
150 * We hit the start of a json-map (rect or a new output)
153 static int outputs_start_map_cb(void *params_) {
154 struct outputs_json_params *params = (struct outputs_json_params*) params_;
155 i3_output *new_output = NULL;
157 if (params->cur_key == NULL) {
158 new_output = smalloc(sizeof(i3_output));
159 new_output->name = NULL;
161 memset(&new_output->rect, 0, sizeof(rect));
162 new_output->bar = XCB_NONE;
164 new_output->workspaces = smalloc(sizeof(struct ws_head));
165 TAILQ_INIT(new_output->workspaces);
167 new_output->trayclients = smalloc(sizeof(struct tc_head));
168 TAILQ_INIT(new_output->trayclients);
170 params->outputs_walk = new_output;
175 if (!strcmp(params->cur_key, "rect")) {
176 params->in_rect = true;
183 * We hit the end of a map (rect or a new output)
186 static int outputs_end_map_cb(void *params_) {
187 struct outputs_json_params *params = (struct outputs_json_params*) params_;
188 if (params->in_rect) {
189 params->in_rect = false;
190 /* Ignore the end of a rect */
194 /* See if we actually handle that output */
195 if (config.num_outputs > 0) {
196 bool handle_output = false;
197 for (int c = 0; c < config.num_outputs; c++) {
198 if (strcasecmp(params->outputs_walk->name, config.outputs[c]) != 0)
201 handle_output = true;
204 if (!handle_output) {
205 DLOG("Ignoring output \"%s\", not configured to handle it.\n",
206 params->outputs_walk->name);
207 FREE(params->outputs_walk->name);
208 FREE(params->outputs_walk->workspaces);
209 FREE(params->outputs_walk->trayclients);
210 FREE(params->outputs_walk);
211 FREE(params->cur_key);
216 i3_output *target = get_output_by_name(params->outputs_walk->name);
218 if (target == NULL) {
219 SLIST_INSERT_HEAD(outputs, params->outputs_walk, slist);
221 target->active = params->outputs_walk->active;
222 target->primary = params->outputs_walk->primary;
223 target->ws = params->outputs_walk->ws;
224 target->rect = params->outputs_walk->rect;
232 * Essentially we just save it in the parsing-state
236 static int outputs_map_key_cb(void *params_, const unsigned char *keyVal, size_t keyLen) {
238 static int outputs_map_key_cb(void *params_, const unsigned char *keyVal, unsigned keyLen) {
240 struct outputs_json_params *params = (struct outputs_json_params*) params_;
241 FREE(params->cur_key);
243 params->cur_key = smalloc(sizeof(unsigned char) * (keyLen + 1));
244 strncpy(params->cur_key, (const char*) keyVal, keyLen);
245 params->cur_key[keyLen] = '\0';
250 /* A datastructure to pass all these callbacks to yajl */
251 yajl_callbacks outputs_callbacks = {
258 &outputs_start_map_cb,
266 * Initiate the output-list
269 void init_outputs(void) {
270 outputs = smalloc(sizeof(struct outputs_head));
275 * Start parsing the received json-string
278 void parse_outputs_json(char *json) {
279 struct outputs_json_params params;
281 params.outputs_walk = NULL;
282 params.cur_key = NULL;
284 params.in_rect = false;
289 yajl_parser_config parse_conf = { 0, 0 };
291 handle = yajl_alloc(&outputs_callbacks, &parse_conf, NULL, (void*) ¶ms);
293 handle = yajl_alloc(&outputs_callbacks, NULL, (void*) ¶ms);
296 state = yajl_parse(handle, (const unsigned char*) json, strlen(json));
298 /* FIXME: Propper errorhandling for JSON-parsing */
302 case yajl_status_client_canceled:
304 case yajl_status_insufficient_data:
306 case yajl_status_error:
307 ELOG("Could not parse outputs-reply!\n");
316 * Returns the output with the given name
319 i3_output *get_output_by_name(char *name) {
324 SLIST_FOREACH(walk, outputs, slist) {
325 if (!strcmp(walk->name, name)) {